Tag Archives: screw gate

China wholesaler Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444

Product Description

screw eyes / square hooks / cup hooks / bended hooks / S hooks / snap hooks / spring toogle plugs / toogle bolt / mountain hook / eye bolts
Size: M3-M64, 1/8″-2″
Material: Alloy steel, carbon steel 35#, stainless steel, brass
Grade: 8.8, 10.9, 12.9, SAE J429 GR. 5/GR. 8
Surface: Black, Zinc Cr+3, Yellow Zinc Cr+6, H. D. G., Dacromet, etc.
Packing: Bulk, box packing, polybag.

 

 

ABOUT US:
Wellbolt is an excellent fasteners & metal production manufacturer and exporter in China,from the beginning of the production of bolts and screws, established its full range fastener distribution line 3 years later.
We supply all kind of  bolts, rods, wood screws, special nuts and stamping parts and export various fasteners and metal products, material can be carbon steel, alloy steel, stainless steel SUS 304, SUS 316, SUS 316L, Aluminum, Brass and plastic, etc. 
Our team has more than 10 years of experience in fastener production and export, and we can provide customers with the right high-quality products.With high-quality products and first-class service, our products has been exported to hundreds of customers in more than 60 countries since 2571.
We believe that high quality and honest service will help customers win the market and achieve a CHINAMFG situation.

FAQ

Q1: Why choose Wellbolt? To provide our customers with first-class services in the supply of quality fasteners minimizing costs.

1.1. Vision: We wishes to build successful relations with our partners and be their first choice as an fastenerssupplier. 

1.2. Mission: professional customer service, and innovation in technology. Further more, we do not only offer you more reasonable quality and price than your expectations, but also would like to be your friend and to provide
you market sales suggestion for your reference, if you have a better idea , please feel free to share with us. 

Q2.How is quality?ensured?
 All our processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to
delivery.Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality
,good at modern concept of management. 

Q3:If you can not find on our website the product you need how to do?
 You can send thepictures/photos and drawings of the products you need by email , we will check if we have them. We develop new
models every month,Or you can send us samples by DHL/TNT, then we can develop the new model especially for you. 

Q4:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?
 Yes, we can, we can provide high precision parts and make the parts as your drawing.

Q5: How should I order and make payment?
 By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance
to be paid before shipment. 

Q6: What’s your Delivery Time?
 Standard parts: 7-45days
Non-standard parts: 25-45days
We will make the delivery as soon as possible with the guarantee quality.

Q7:How to Custom-made (OEM/ODM)?
 If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. 

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Material: Carbon Steel
Type: Screw Hook
Groove: /
Connection: Screw Hook
Head Style: Screw Hook
Standard: DIN

eye bolt screw

How do electronic or computer-controlled systems integrate with eye bolt screws in modern applications?

In modern applications, electronic or computer-controlled systems can integrate with eye bolt screws to enhance functionality, monitoring, and control. The integration of electronic or computer-controlled systems with eye bolt screws enables advanced features such as automation, real-time monitoring, data recording, and remote control. Here’s a detailed explanation of how these systems integrate with eye bolt screws:

  • Sensor Integration: Electronic systems can incorporate sensors that are directly integrated with eye bolt screws to monitor various parameters such as load, tension, strain, or vibration. These sensors can provide real-time data on the performance and condition of the screws, allowing for continuous monitoring and early detection of potential issues.
  • Data Acquisition: Computer-controlled systems can gather data from the sensors integrated with eye bolt screws, capturing information such as load measurements, operating conditions, or environmental factors. This data can be stored for analysis, used for predictive maintenance, or integrated into larger control systems for process optimization.
  • Automation and Actuation: Electronic or computer-controlled systems can automate the operation of eye bolt screws, enabling precise and consistent control. Through programmable logic controllers (PLCs), motor drives, or other control mechanisms, these systems can regulate the tightening or loosening of the screws, adjust the applied load, or control the positioning of the connected components.
  • Remote Control and Monitoring: Integration with electronic systems enables remote control and monitoring of eye bolt screws. Through network connectivity and communication protocols, the screws can be remotely accessed and controlled, allowing for adjustments, troubleshooting, or data retrieval from a central control station or even through mobile devices.
  • Integration with Overall System Control: In complex systems, such as industrial machinery or automated manufacturing processes, eye bolt screws can be integrated into the overall control architecture. This integration allows for synchronization with other components, coordination with motion control systems, or integration with higher-level control algorithms.
  • Alerts and Alarms: Electronic systems can be programmed to generate alerts or alarms based on predefined thresholds or abnormal conditions detected in the eye bolt screws. These notifications can be sent to operators or maintenance personnel, enabling proactive actions to address potential issues and prevent failures.

The integration of electronic or computer-controlled systems with eye bolt screws brings several advantages, including improved accuracy, increased efficiency, enhanced safety, and the ability to gather valuable data for analysis and optimization. However, it is important to ensure that the electronic components and systems are properly designed, tested, and protected against environmental factors, vibrations, or electrical interference to ensure reliable operation.

Overall, the integration of electronic or computer-controlled systems with eye bolt screws represents a significant advancement in modern applications, providing increased control, monitoring, and intelligence for improved performance and operational efficiency.

eye bolt screw

How do eye bolt screws contribute to load-bearing and lifting operations?

Eye bolt screws play a crucial role in load-bearing and lifting operations by providing a secure and reliable attachment point for connecting lifting equipment, such as ropes, cables, or chains, to the load being lifted. Here’s how eye bolt screws contribute to load-bearing and lifting operations:

  1. Attachment Point: Eye bolt screws feature an eye or loop at one end, which serves as the attachment point for lifting equipment. The shape and design of the eye provide a secure and properly fitting connection for the hardware used in lifting operations, ensuring that the load remains stable and properly supported during lifting.
  2. Load Distribution: When a load is attached to an eye bolt screw, the screw transfers the weight and forces exerted by the load to the surrounding structure or support system. The eye bolt screw acts as a load-bearing component, distributing the load evenly across its body and the attachment point. This helps prevent concentrated stress on a single point, reducing the risk of failure or damage.
  3. Strength and Load Capacity: Eye bolt screws are designed and manufactured to have high load-bearing capacities to withstand the forces encountered during lifting operations. They are made from materials with sufficient tensile and yield strength, ensuring that they can handle the expected loads without deformation or failure. The load capacity of an eye bolt screw is typically specified by the manufacturer and should not be exceeded to maintain safety.
  4. Flexibility and Versatility: Eye bolt screws come in various sizes, shapes, and configurations, allowing them to be used in a wide range of load-bearing and lifting applications. They can be installed in different orientations, such as vertical, horizontal, or angled, depending on the specific lifting requirements. This flexibility makes eye bolt screws adaptable to different lifting scenarios and enables them to accommodate various hardware and equipment.
  5. Safety Considerations: Eye bolt screws are subject to specific safety guidelines and standards to ensure their proper use in load-bearing and lifting operations. These guidelines may include factors such as proper installation torque, inspection and maintenance requirements, and load capacity limitations. Adhering to these safety considerations helps minimize the risk of accidents, load failures, or injuries during lifting operations.

Overall, eye bolt screws provide a critical link between the load and the lifting equipment, enabling safe and efficient load-bearing and lifting operations. Their strength, reliability, and versatility make them indispensable components in various industries, including construction, manufacturing, rigging, and material handling.

eye bolt screw

How does the design of an eye bolt screw contribute to its strength and durability?

The design of an eye bolt screw plays a crucial role in determining its strength and durability. Various design features are incorporated to ensure that the eye bolt screw can withstand the intended loads and provide a reliable and long-lasting attachment point. Here are some ways in which the design contributes to the strength and durability of an eye bolt screw:

  1. Material Selection: Eye bolt screws are available in different materials, such as steel, stainless steel, or other alloys. The choice of material depends on the specific application and environmental factors. High-strength materials like stainless steel or alloy steel are commonly used to enhance the strength and corrosion resistance of the eye bolt screw.
  2. Threaded Shank: The threaded shank of an eye bolt screw allows for easy installation by screwing it into a pre-drilled hole or threaded receptacle. The design of the thread profile and pitch ensures a secure and tight fit. The threads distribute the applied load over a larger area, reducing stress concentration and increasing the overall strength of the attachment.
  3. Eye Design: The design of the eye, or the looped end, of an eye bolt screw is critical for its performance. The eye is typically circular or oval-shaped, providing a smooth and continuous attachment point. The shape and size of the eye are designed to accommodate the intended hardware, such as cables, ropes, or chains, ensuring a proper fit and reducing the risk of slippage or failure.
  4. Shoulder or Collar: Some eye bolt screws feature a shoulder or collar between the shank and the eye. This shoulder provides additional support and prevents the bolt from pulling through the attachment point. The presence of a shoulder enhances the load-bearing capacity and stability of the eye bolt screw, making it suitable for heavy-duty applications.
  5. Load Ratings and Compliance: Eye bolt screws are designed to meet specific load ratings and comply with industry standards and safety regulations. The design takes into account the anticipated loads and forces that the eye bolt screw will experience. Load ratings are determined through testing and ensure that the eye bolt screw can safely handle the intended loads without failure or deformation.
  6. Corrosion Resistance: In environments where corrosion is a concern, eye bolt screws are designed with corrosion-resistant materials or coatings. Stainless steel or galvanized steel eye bolt screws are commonly used in applications where exposure to moisture, chemicals, or harsh weather conditions is expected. This design choice enhances the durability and longevity of the eye bolt screw.

By considering these design factors, manufacturers can produce eye bolt screws that are capable of withstanding the intended loads, provide a secure attachment point, and resist environmental factors that could compromise their strength and durability. It is crucial to choose eye bolt screws that are designed and rated for the specific application to ensure safe and reliable performance.

China wholesaler Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444  China wholesaler Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444
editor by CX 2024-01-05

China Standard Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444

Product Description

screw eyes / square hooks / cup hooks / bended hooks / S hooks / snap hooks / spring toogle plugs / toogle bolt / mountain hook / eye bolts
Size: M3-M64, 1/8″-2″
Material: Alloy steel, carbon steel 35#, stainless steel, brass
Grade: 8.8, 10.9, 12.9, SAE J429 GR. 5/GR. 8
Surface: Black, Zinc Cr+3, Yellow Zinc Cr+6, H. D. G., Dacromet, etc.
Packing: Bulk, box packing, polybag.

 

 

ABOUT US:
Wellbolt is an excellent fasteners & metal production manufacturer and exporter in China,from the beginning of the production of bolts and screws, established its full range fastener distribution line 3 years later.
We supply all kind of  bolts, rods, wood screws, special nuts and stamping parts and export various fasteners and metal products, material can be carbon steel, alloy steel, stainless steel SUS 304, SUS 316, SUS 316L, Aluminum, Brass and plastic, etc. 
Our team has more than 10 years of experience in fastener production and export, and we can provide customers with the right high-quality products.With high-quality products and first-class service, our products has been exported to hundreds of customers in more than 60 countries since 2571.
We believe that high quality and honest service will help customers win the market and achieve a CHINAMFG situation.

FAQ

Q1: Why choose Wellbolt? To provide our customers with first-class services in the supply of quality fasteners minimizing costs.

1.1. Vision: We wishes to build successful relations with our partners and be their first choice as an fastenerssupplier. 

1.2. Mission: professional customer service, and innovation in technology. Further more, we do not only offer you more reasonable quality and price than your expectations, but also would like to be your friend and to provide
you market sales suggestion for your reference, if you have a better idea , please feel free to share with us. 

Q2.How is quality?ensured?
 All our processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to
delivery.Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality
,good at modern concept of management. 

Q3:If you can not find on our website the product you need how to do?
 You can send thepictures/photos and drawings of the products you need by email , we will check if we have them. We develop new
models every month,Or you can send us samples by DHL/TNT, then we can develop the new model especially for you. 

Q4:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?
 Yes, we can, we can provide high precision parts and make the parts as your drawing.

Q5: How should I order and make payment?
 By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance
to be paid before shipment. 

Q6: What’s your Delivery Time?
 Standard parts: 7-45days
Non-standard parts: 25-45days
We will make the delivery as soon as possible with the guarantee quality.

Q7:How to Custom-made (OEM/ODM)?
 If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. 

Material: Carbon Steel
Type: Screw Hook
Groove: /
Connection: Screw Hook
Head Style: Screw Hook
Standard: DIN

eye bolt screw

Can eye bolt screws be customized for specific load capacities or applications?

Yes, eye bolt screws can be customized to meet specific load capacities or applications. Customization allows for the adaptation of eye bolt screws to suit the unique requirements of different industries, environments, and lifting or rigging operations. Here’s a detailed explanation:

Load Capacity Customization:

Eye bolt screws can be customized to accommodate specific load capacities by adjusting their design and material properties. The load capacity of an eye bolt screw is influenced by factors such as the diameter, thread pitch, material strength, and the mode of loading (tension, shear, or bending). By considering these factors, engineers can tailor the design and specifications of the eye bolt screws to achieve the desired load capacity.

Load capacity customization may involve:

  • Choosing Appropriate Materials: Eye bolt screws can be manufactured from a variety of materials, including steel, stainless steel, alloys, or non-metallic composites. The selection of materials with higher tensile strength or specific load-bearing properties can enhance the load capacity of the eye bolt screws.
  • Modifying Dimensions: By adjusting the diameter, thread size, or shank length of the eye bolt screws, engineers can optimize their load-carrying capabilities. Increasing the cross-sectional area or altering the thread profile can enhance the strength and load capacity of the screws.
  • Consideration of Thread Engagement: The length and depth of engagement between the eye bolt screw and the receiving component can impact the load capacity. Customization may involve ensuring adequate thread engagement to maximize the load-carrying capability and prevent thread stripping or failure.

Application-Specific Customization:

Eye bolt screws can also be customized to suit specific applications or operational requirements. Different industries and applications may have unique needs that require customized eye bolt screws. Some examples of application-specific customization include:

  • Coatings and Surface Treatments: Eye bolt screws can be customized with coatings or surface treatments to enhance their performance in specific environments. For instance, coatings like zinc plating, galvanizing, or epoxy coatings can provide corrosion resistance, chemical resistance, or improve friction characteristics.
  • Specialized Threads: Certain applications may require specialized thread forms or configurations, such as fine threads, coarse threads, or special thread profiles. Customizing the threading of eye bolt screws can ensure compatibility with specific components or facilitate easier installation or removal.
  • Special Features: Eye bolt screws can be customized with special features to meet unique application requirements. This may include the addition of swiveling mechanisms, locking mechanisms, or other attachment points to enhance functionality or ease of use.

By customizing eye bolt screws for specific load capacities or applications, engineers can optimize their performance, safety, and reliability. It is important to work with experienced manufacturers or suppliers who can provide guidance and expertise in customizing eye bolt screws based on the specific requirements of the intended application.

eye bolt screw

What factors should be considered when selecting eye bolt screws for specific applications?

When selecting eye bolt screws for specific applications, several factors need to be considered to ensure the appropriate choice that meets the requirements of the application. These factors include:

  1. Load Capacity: Determine the anticipated load that the eye bolt screw will need to support. Consider both the static and dynamic loads, as well as any potential shock or impact loads. Choose an eye bolt screw with a load capacity that exceeds the expected loads to provide a safety margin.
  2. Material Strength: Evaluate the strength properties required for the application. Eye bolt screws are available in various materials, such as steel, stainless steel, or other alloys. Consider factors such as tensile strength, yield strength, and hardness to ensure the selected eye bolt screw can withstand the applied loads without deformation or failure.
  3. Corrosion Resistance: Assess the environmental conditions in which the eye bolt screw will be used. If the application involves exposure to moisture, chemicals, or corrosive elements, choose eye bolt screws with corrosion-resistant materials or coatings, such as stainless steel or galvanized steel, to prevent premature corrosion and maintain the integrity of the screw.
  4. Thread Type: Consider the type of thread required for the specific application. Eye bolt screws may have different thread types, such as coarse threads or fine threads. Coarse threads provide quicker installation and higher resistance to vibrational loosening, while fine threads offer finer adjustments and increased holding power.
  5. Attachment Point: Determine the method of attachment and the hardware that will be connected to the eye bolt screw. Consider the size and shape of the eye to ensure compatibility with the intended hardware, such as ropes, cables, or chains. The eye should provide a secure and properly fitting attachment point to minimize the risk of slippage or failure.
  6. Regulatory Compliance: Check if there are specific industry standards, regulations, or certifications that the eye bolt screw needs to meet. Industries such as construction, marine, or aerospace may have specific requirements for eye bolt screws. Ensure that the selected eye bolt screw complies with the relevant standards and regulations to ensure safety and reliability.
  7. Installation Method: Consider the installation method and the available equipment for installing the eye bolt screw. Some applications may require specific tools or techniques for proper installation. Ensure that the selected eye bolt screw can be easily installed using the available resources without compromising the installation quality.

By carefully considering these factors, you can select the most suitable eye bolt screws for specific applications. It is important to consult with industry professionals, engineers, or manufacturers to ensure that the chosen eye bolt screws meet the specific requirements and provide a reliable and safe solution for the intended application.

eye bolt screw

Can you describe the proper installation and use of eye bolt screws in different settings?

Proper installation and use of eye bolt screws are essential to ensure their effectiveness, safety, and longevity in various settings. Here are general guidelines for the installation and use of eye bolt screws in different settings:

  1. Preparation:
    • Identify the specific application and determine the load requirements, environmental conditions, and any applicable regulations or standards.
    • Select an appropriate eye bolt screw considering factors such as load capacity, material strength, corrosion resistance, and compatibility with the intended application.
    • Inspect the eye bolt screw for any defects, damage, or signs of wear before installation. Do not use a damaged or compromised eye bolt screw.
  2. Installation:
    • Pre-drill a hole or use a threaded receptacle of the appropriate size and depth to accommodate the eye bolt screw.
    • Screw the threaded end of the eye bolt screw into the pre-drilled hole or threaded receptacle. Ensure that the threads engage smoothly and do not cross-thread.
    • Tighten the eye bolt screw using an appropriate tool, such as a wrench or socket. Avoid over-tightening, as it may cause damage to the threads or the attachment point.
    • If the eye bolt screw has a shoulder or collar, ensure that it rests securely against the attachment surface for optimal load distribution.
  3. Load Application:
    • Attach the appropriate hardware, such as ropes, cables, or chains, to the eye of the eye bolt screw. Ensure that the hardware is compatible with the size and shape of the eye.
    • Inspect the attachment to verify that the hardware is properly secured within the eye and does not show signs of slippage or deformation.
    • Apply the load gradually and avoid sudden impacts or jerks that could cause excessive stress on the eye bolt screw or the attachment point.
    • Regularly inspect the eye bolt screw and the attachment for signs of wear, deformation, or loosening. If any issues are identified, take appropriate action to address them, such as tightening the eye bolt screw or replacing it if necessary.
  4. Maintenance and Safety:
    • Regularly inspect the eye bolt screw and its attachment for corrosion, wear, or damage. Clean and lubricate the eye bolt screw as needed, following the manufacturer’s recommendations.
    • Follow any specific maintenance instructions provided by the manufacturer for the particular type of eye bolt screw and its corresponding application.
    • Ensure that the load applied to the eye bolt screw does not exceed its rated capacity. Refer to load charts or consult with engineers or professionals when dealing with higher loads or critical applications.
    • Adhere to relevant safety guidelines and regulations specific to the industry or setting in which the eye bolt screw is being used.

It is important to note that these guidelines provide general information for the installation and use of eye bolt screws. However, specific installations may have unique requirements or considerations based on the application and industry standards. Therefore, it is recommended to consult with professionals or experts in the relevant field to ensure proper installation and use of eye bolt screws in specific settings.

China Standard Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444  China Standard Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444
editor by CX 2023-11-27

China Hot selling Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444 near me factory

Product Description

PRODUCT DESCRIPTION

Product Eyebolt 
Material Stainless steel: A2-70, A4-70, 304,316, etc
Carbon steel: SAE1008, Q195, ST37, etc
Brass, Copper, Aluminum
Surface HDG, Zinc plated, Geomet, Dacromet, Black Oxide, Phosphatizing, Powder Coating and Electrophoresis.
Grade 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9.
Standard ISO, DIN, ANSI, JIS, BSW, ASME and Non-standard.

 

PRODUCT DETAILS

TRADING INFORMATION

Payment T/T,
Western Union
L/C.
Delivery time Within 7-12 days after 30% deposit.
Trade Terms FOB, CIF, EXW

PRODUCT TYPES

PRODUCT ADVANTAGES

PRODUCT SPECIFICATION

PRODUCTION WORKSHOP

PRODUCT TEST

PACKAGE & LOADING

FAQ

Q: What is the MOQ?
A: 1 pc.
 
Q: Can I get a sample?
A: Yes we offer free samples. Delivery cost is to be paid by clients.

Q: What is delivery time?
A: 5 days after deposit. Except for public holidays.

Q: How can you guarantee the quality?
A: We have rigorous quality test system, from raw materials to finished products, the materials must be checked and signed by QC people.

Q: How long can I get a quote?
A: The quotation can be provided not longer than 24 hours on condition that we know all detailed requirements.

Q: Can you provide OEM service?
A: Yes,we can produce under your own brandname. Logo and design need to be provided so as to make customized brandname.
 

MORE PRODUCTS

What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
screwshaft

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
screwshaft

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
screwshaft

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

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China Best Sales Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444 near me factory

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KINGPLUSE is specialized in different kinds of products. We stick to the principle of “quality first, service first, continuous improvement and innovation to meet the customers” for the management and “zero defect, zero complaints” as the quality objective. To perfect our service, we make our products with good quality at the reasonable price.

Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444

 

SYSTEM SIZE LENGTH GRADE FINISH SPECIFICATION
METRIC M5-M20 10-300mm 4.8,6.8,8.8 PLAIN
BLACK
ZP, YZP
HDG
GALVANIZED
DACROMET
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INCH 1/4″-3/4″ 5/16″-12″ SAE J429- Gr.2,5,8  

ABOUT US:
KINGPLUSE, ISO9001: 2015 certified, is a professional manufacturer of hexagonal fasteners, as well as an exporter of a wide range of industrial and constructive fasteners and fixings.

KINGPLUSE was founded as a trading agent for hexagonal bolts in 2006 in ZheJiang . Gone through rapid development, Kingpluse has accumulated rich experience in fastener filed, especially in hexagonal items. To kepp competitive and reliable in the market, KINGPLUSE has seized the chances to become the owner of a manufacturer for bolts and the shareholder of 3 professional manufacturers for self-drilling screws, nuts and washers during the year of 2012-2014. Largo capacity, along with our professional knowledge and experience, will guarentee the customers getting high quality products at the most favorable prices.

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Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.
screwshaft

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.
screwshaft

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.
screwshaft

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

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Product Description

PRODUCT DESCRIPTION

Product Eyebolt 
Material Stainless steel: A2-70, A4-70, 304,316, etc
Carbon steel: SAE1008, Q195, ST37, etc
Brass, Copper, Aluminum
Surface HDG, Zinc plated, Geomet, Dacromet, Black Oxide, Phosphatizing, Powder Coating and Electrophoresis.
Grade 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9.
Standard ISO, DIN, ANSI, JIS, BSW, ASME and Non-standard.

 

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A: Yes we offer free samples. Delivery cost is to be paid by clients.

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A: We have rigorous quality test system, from raw materials to finished products, the materials must be checked and signed by QC people.

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A: Yes,we can produce under your own brandname. Logo and design need to be provided so as to make customized brandname.
 

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Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.
screwshaft

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.
screwshaft

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.
screwshaft

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

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China Good quality Screw Eye/Eye Bolts/Square Hooks / Cup Hooks/ S Hooks / Snap Hooks / Spring Toogle Plugs / Toogle Bolt / Mountain Hook / Steel Gate Hook/Cup Hook Screws/DIN444 with Free Design Custom

Product Description

screw eyes / square hooks / cup hooks / bended hooks / S hooks / snap hooks / spring toogle plugs / toogle bolt / mountain hook / eye bolts
Size: M3-M64, 1/8″-2″
Material: Alloy steel, carbon steel 35#, stainless steel, brass
Grade: 8.8, 10.9, 12.9, SAE J429 GR. 5/GR. 8
Surface: Black, Zinc Cr+3, Yellow Zinc Cr+6, H. D. G., Dacromet, etc.
Packing: Bulk, box packing, polybag.

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A:  Bolts, Nuts, Screws,Washers, Threaded Rods, Anchors, Metal Stamping and Special Parts.

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Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
screwshaft

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
screwshaft

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
screwshaft

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.

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