China Set Screws Manufacturers Suppliers Factory - Customized Set Screws Wholesale

Jiangyin Xianggu Hardware Products: A Leading Professional Set Screws Manufacturer in China

We have specialized in manufacturing various types of Hex Bolts for many years. By doing business with us, you can gain:

Complete Product Range

Our company can provide various stainless steel, carbon steel, copper Hex Bolts, Flange Bolts, Hex Socket Head Screws, Hex Nuts, Spring Washers, Flat Washers and other fasteners. We also offer a variety of coating treatments, such as hot-dip galvanizing, Dacromet, blue-white zinc, yellow zinc.

Professional Management System

Our company is committed to integrating the advantageous supply chain system of various fastener products, focusing on the sales staff's mastery of professional knowledge of fasteners, and aims to provide customers with fastener system solutions.

Rich Experience

We have been working with customers from various countries and industries for many years, so the experience is very rich. We are willing to be your partner with first-class product quality, first-class service level and competitive price.

Wide Range of Product Applications

Our fasteners are widely used in automobiles, ships, wind energy, solar energy, boilers, electronic appliances, mechanical equipment, construction engineering and other fields.

Stainless Steel Cup Point Set Screws
Stainless steel cup head set screws are a versatile fastener that is commonly used in a variety of industries to hold objects in place. These screws are usually made of stainless steel, a
Hex Socket Set Screw With Dog Point
Hex socket set screw with dog point is a type of screw used for a variety of purposes. These screws have a hexagonal recess in the head that can be tightened with an Allen key or hex wrench. The
Hexagon Socket Dog Point Set Screw
Hexagon socket dog point set screw is a screw used to fasten and connect components, usually made of high-strength steel or stainless steel. It has a hexagonal internal hexagonal head so that it can
Hex Socket Set Screw With Cone Point
Hex socket set screw with cone point is a common mechanical connector that is often used to fasten two parts together. This screw has a hexagonal hexagon head and can be installed and removed using a
SS304 Set Screw
SS304 Set screw is a threaded screw used to fix mechanical parts, usually made of stainless steel 304 (SS304). This screw is designed to be used in situations where parts need to be fixed but torque
Hex Socket Set Screw
Hex socket set screw is a fastener used to connect and fix parts, usually made of metal. It has a hexagonal recessed head and can be installed and removed using a hexagonal wrench or torque wrench.
Stainless Steel Set Screw
Stainless steel set screw is a common fastener, usually used to fix mechanical parts. It is made of stainless steel, has corrosion resistance and wear resistance, and is suitable for a variety of
Hex Socket Set Screw With Flat Point
Hex socket set screw with flat point, commonly known as flat head screw, is a versatile fastener used in a variety of mechanical applications. These screws have a hexagonal drive socket on one end,
Hexagon Socket Set Screws With Dog Point
ISO4028 Black Oxide Finish Hex drive Full Dog Point Set Screws
Alloy Steel Cone-Point Set Screws
DIN914 Alloy Steel Cone-Point Set Screws
Alloy Steel High Strength Flat-Tip Set Screws
Alloy Steel High Strength Flat-Tip Set Screws
Hexagon Socket Set Screws with Flat Point
These set screws have a tip that makes good contact on flat surfaces and allows you to make frequent adjustments with minimal surface damage.

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What Is a Set Screw?

Set screws are a type of fastener used to secure an object within or against another object, typically without the use of a nut. Unlike most other screws, set screws are fully threaded and do not have a head protruding outside the surface of the object being fastened.

Advantages of Set Screws

Easy to Install

One of the primary benefits of set screws is that they are easy to install. They don't require complex tools or advanced knowledge to install, which makes them an ideal choice for DIY projects.

Strong and Durable

Set screws are known for their strength and durability. They are made from high-quality materials that are designed to withstand heavy loads and resist corrosion and wear over time.

Versatile

Set screws are available in a wide range of sizes and lengths, which makes them versatile and suitable for different types of applications. They can be used in various components and machinery to secure parts in place or provide adjustments.

Design Flexibility

Set screws offer design flexibility, as they can be used in different orientations and configurations. This feature offers many options for designers and engineers to create innovative designs.

No External Thread

Set screws have a thread on the inside of the screw instead of the outside. This feature allows the screw to sit flush against the surface, creating a cleaner and more aesthetically pleasing appearance.

Not as Pronounced as Other Fasteners

Set screws lie flat against the surface they attach to, rather than protruding out. They are not as visually obtrusive as other fasteners, making them an ideal choice for surfaces or components where appearance is important.

What Are Some Common Types of Set Screws?

1. Cup Point Set Screws: These set screws have a cup-shaped indentation on the end, which provides a strong grip on the surface it is tightened against.
2. Cone Point Set Screws: Cone point set screws have a pointed end that makes contact with the surface, providing a sharp and deep penetration for a secure hold.
3. Flat Point Set Screws: Flat point set screws have a flat surface at the end, which distributes pressure evenly and is ideal for applications where marring or damage to the surface is a concern.
4. Oval Point Set Screws: Oval point set screws have an oval-shaped indentation at the end, which offers good grip and prevents damage to softer materials.
5. Half Dog Point Set Screws: Half dog point set screws have a flat tip with a small protrusion (dog point) that digs into the surface for enhanced grip.
6. Full Dog Point Set Screws: Full dog point set screws have a larger protrusion (dog point) than half dog point set screws, providing even greater holding power.
7. Cup Point with Brass Tip Set Screws: These set screws feature a cup point with an added brass tip, which reduces marring on delicate surfaces while maintaining a secure hold.
8. Nylon Tip Set Screws: Nylon tip set screws have a nylon tip at the end, which provides vibration resistance and prevents damage to sensitive components.
9. Knurled Cup Point Set Screws: Knurled cup point set screws have a textured cup-shaped indentation that offers increased resistance to loosening due to vibrations.
10. Slotted Set Screws: Slotted set screws feature a slot on the head for easy adjustment using a screwdriver or other tool.

Application of Set Screws

Fastening gears

Set screws are commonly used to attach gears to shafts. The set screw is typically positioned in a keyway and tightened onto the flat of the shaft, ensuring a secure hold that will resist slipping.

Securing components

In machinery and equipment, set screws are often used to secure components such as bearings, pulleys, and couplings. The set screw is usually tightened against a flat on the component's shaft or hub, ensuring a tight fit.

Adjusting position

Some set screws are designed for use in adjusting the position of components, such as adjusting the height of a table or the angle of a machine tool. These set screws may have a pointed tip that makes contact with the surface being adjusted, allowing for precise positioning.

Locking fasteners

Set screws can also be used as a locking mechanism for other fasteners, such as bolts and nuts. The set screw is tightened against the threaded portion of the fastener, preventing it from loosening over time.

Electrical connections

In electrical systems, set screws are commonly used to make connections between wires and electrical equipment. The set screw is tightened onto the wire, ensuring a firm grip and good electrical contact.

Common Mistakes to Avoid When Using Set Screws

1. Using the Wrong Size or Type of Set Screw: One of the most common mistakes is using a set screw that is either too small or too large for the application. It is important to select the right size and type of set screw based on the specific requirements of the connection.
2. Over Tightening: Over-tightening a set screw can lead to stripping of the threads, which can make it difficult to remove the screw in the future. It can also cause damage to the material being fastened. It is important to tighten the set screw just enough to secure the connection without applying excessive force.
3. Not Using a Proper Driver: Using an incorrect or worn-out driver when tightening a set screw can lead to improper torque application and potential damage to both the screw and the material being fastened. Always use a driver that fits properly into the screw head.

How to Remove Stubborn Set Screws Without Damaging Your Equipment

Use a screwdriver that fits perfectly

Choose a screwdriver that fits snugly into the screw head to get maximum leverage without slipping. Make sure the tip of the screwdriver is in good shape, and not worn out.

Apply heat

Heat can help loosen the screw's grip. Use a heat gun or a lighter to heat the screw and surrounding area. Try not to overheat or melt any plastic parts.

Use a penetrating oil

Apply a penetrating oil such as WD-40 or PB Blaster to the set screw and surrounding area. Allow the oil to soak for a few minutes before attempting to remove the screw.

Use a screw extractor

If the set screw is completely stuck or stripped, use a screw extractor. This tool can be attached to a drill and can easily remove stuck or stripped screws. Follow the manufacturer's instructions carefully.

Tap the screwdriver gently with a hammer

Try tapping on the screwdriver gently with a hammer, in a counterclockwise direction, while applying pressure to loosen the set screw.

Use pliers

If the set screw is very small and difficult to grab with pliers, try using needle-nose pliers or locking pliers. Grip the set screw firmly and twist gently.

Tips for Correctly Tightening Set Screws

1. Use the right tools: Make sure you have the correct size and type of Allen wrench or screwdriver for the set screw you are tightening. Using the wrong tool can damage the screw head and make it difficult to tighten properly.
2. Clean the screw and surrounding area: Before tightening the set screw, make sure the screw and surrounding area are clean and free of any dirt, debris, or old thread-locking compound. This will help ensure a secure connection.
3. Apply thread-locking compound: For critical applications where vibration may cause the set screw to loosen over time, consider applying a small amount of thread-locking compound to the threads before tightening. This will help prevent the screw from coming loose.
4. Tighten gradually: When tightening a set screw, do not overtighten it all at once. Instead, tighten it gradually in small increments, alternating between each side of the screw if applicable. This will help distribute the pressure evenly and prevent stripping or damage.
5. Use a torque wrench: For precision tightening, consider using a torque wrench to ensure that you apply the correct amount of force to the set screw. This is especially important for critical applications where over-tightening can cause damage.
6. Check for proper alignment: Before tightening the set screw completely, make sure that the components it is securing are properly aligned. Adjust as needed before finalizing the tightening process.
7. Inspect for tightness: After tightening the set screw, inspect it visually and check for any signs of looseness or movement. If necessary, re-tighten slightly to ensure a secure connection.

How Do You Install a Set Screw?

To install a set screw, you will need the following tools and materials:
1. Set screw
2. Allen wrench or hex key
3. Screwdriver (if necessary)
4. Work gloves (optional)

Here are the steps to install a set screw:
1. Choose the right size set screw for your application. Make sure it is the correct length and diameter for the job.
2. Insert the set screw into the hole or threaded opening where you want to secure it. Use your fingers to turn it clockwise until it is snug against the surface.
3. Use an Allen wrench or hex key that fits the set screw's socket to tighten it further. Turn the wrench clockwise to secure the set screw in place.
4. Make sure not to overtighten the set screw, as this can strip the threads or damage the surrounding material.
5. If necessary, use a screwdriver to provide additional torque for tightening the set screw.
6. Once the set screw is securely in place, double-check that it is holding whatever it is intended to secure.
7. If you are working with small or sharp objects, consider wearing work gloves to protect your hands during installation.

How to Choose Set Screws?

01/

Determine the type of set screw needed: Set screws come in various types, including cup, cone, flat, and oval types. Choose a type that best suits your application.

02/

Determine the size of the set screw: Measure the diameter and length of the hole that the set screw will be placed into. Make sure to choose a set screw that is the appropriate size for the hole.

03/

Choose the material of the set screw: Set screws can be made from various materials, including stainless steel, titanium, and brass. Choose a material that is appropriate for your application and provides the necessary strength and durability.

04/

Choose the type of drive: Set screws can be driven by hex keys (Allen wrenches), slotted screwdrivers, or Torx drivers. Choose a drive type that is easy to use and appropriate for your application.

05/

Consider the environment: If the set screw will be placed in a corrosive or harsh environment, choose a material that is resistant to corrosion and appropriate for the environment.

06/

Check for standards compliance: Choose set screws that comply with industry standards and regulations, such as ASTM or ISO standards, to ensure quality and safety.

Can Set Screws Be Used as Permanent Fasteners?

Set screws are commonly used as temporary fasteners rather than permanent fasteners. Set screws are designed to be tightened against a surface to prevent movement or slippage of an object, such as securing a pulley or gear onto a shaft. However, set screws may not provide the same level of security and reliability as other types of fasteners, such as bolts or nuts.
When used as permanent fasteners, set screws may be prone to loosening over time due to factors such as vibration, thermal expansion, or material deformation. This can lead to the object becoming loose or detached from the shaft, potentially causing safety hazards or equipment malfunction.
For applications where permanent fastening is required, it is recommended to use more secure and reliable fastening methods such as bolts, nuts, rivets, welding, or adhesives. These methods provide better resistance to loosening and ensure long-term stability and safety of the assembled components.
While set screws can be used for temporary fastening applications, they are not typically recommended for permanent fastening due to their potential for loosening over time. It is important to select the appropriate type of fastener based on the specific requirements of the application to ensure safety and reliability.

What Are Some Common Sizes of Set Screws?

Set screws are commonly used in various industries for securing an object within or against another object. They come in a variety of sizes to accommodate different applications. Some common sizes of set screws include:
1. #4-40: This size is often used for smaller applications where a finer thread is required.
2. #6-32: A slightly larger size commonly used in machinery and equipment assembly.
3. #8-32: This size is popular for securing components in electronic devices and small machinery.
4. #10-24: A common size for medium-duty applications such as automotive and construction.
5. 1/4"-20: A larger size suitable for heavier loads and industrial equipment.
6. 5/16"-18: Used in construction, woodworking, and other heavy-duty applications.
7. 3/8"-16: Another common size for heavy-duty machinery and equipment.

What Materials Are Used to Make Set Screws?

1. Steel: Steel set screws are the most common type and are available in various grades such as stainless steel, carbon steel, and alloy steel. Stainless steel set screws are popular for their corrosion resistance, making them suitable for applications where exposure to moisture or chemicals is a concern.
2. Alloy Steel: Alloy steel set screws are heat-treated to achieve high strength and hardness. They are often used in applications that require a higher level of torque or where the screw may be subjected to heavy loads.
3. Brass: Brass set screws are known for their excellent corrosion resistance and aesthetic appeal. They are commonly used in decorative or low-torque applications where appearance is important.
4. Aluminum: Aluminum set screws are lightweight and non-magnetic, making them suitable for applications where weight reduction is a priority or where magnetic interference needs to be avoided.
5.Titanium: Titanium set screws offer high strength-to-weight ratio, excellent corrosion resistance, and biocompatibility, making them ideal for aerospace, medical, and marine applications.

Can Set Screws Be Re-Used?

Set screws are typically designed for one-time use only. When a set screw is tightened, it creates a strong bond between the screw and the surface it is fastened to. This bond can be compromised if the set screw is removed and reinstalled multiple times, as the threads may become worn or damaged, leading to a weaker connection.
Reusing set screws can also increase the risk of stripping the threads on either the screw or the surface it is fastened to, which can make it difficult to achieve a secure fit in the future. Additionally, set screws are often treated with coatings or adhesives to enhance their grip, and these may wear off with repeated use.
It is recommended to use new set screws whenever possible to ensure a reliable and secure connection. If a set screw must be removed and reinstalled, it is important to inspect both the screw and the surface it attaches to for any signs of wear or damage before reusing it.

How Do You Remove a Stripped Set Screw?

1. Use an extractive tool: Purchase an extractive tool from your local hardware store. These tools have a reverse-threaded tip that digs into the screw as it turns, allowing you to remove it.
2. Use pliers: If the screw head is protruding slightly from the surface, you can try gripping it with a pair of pliers and turning it counterclockwise.
3. Use a rubber band: Place a rubber band over the stripped area and press down with a screwdriver. The rubber band gives the screwdriver extra grip, making it easier to turn the screw.
4. Heat the area: Use a heat gun or hairdryer to heat the metal around the set screw. This will cause the metal to expand, which can loosen the screw.
5. Drill it out: If all else fails, drill a small hole into the center of the screw with a drill bit slightly smaller than the screw. This will allow you to insert a screw extractor or drill bit extractor to remove the set screw.

Maintenance Tips for Set Screws

Regular Inspection

It is important to regularly inspect set screws for any signs of wear, damage, or loosening. This can help identify issues early on and prevent further damage.

Tightening

Set screws should be tightened securely using the appropriate tools. Over-tightening can cause damage, while under-tightening can result in the screw coming loose.

Use of Threadlocker

To prevent set screws from loosening due to vibrations or other factors, consider using a threadlocker solution. This can help secure the screw in place and prevent it from backing out.

Proper Installation

When installing set screws, make sure they are positioned correctly and tightened securely against the surface. Improper installation can lead to issues such as stripping or misalignment.

Cleanliness

Keep the set screw and surrounding area clean from dirt, debris, and other contaminants. This can help maintain a secure grip and prevent issues with tightening.

Replacement

If a set screw shows signs of wear, damage, or if it becomes stripped, it is important to replace it promptly. Using a damaged or worn-out set screw can compromise the integrity of the connection.

Testing Equipment

We use the following equipment to test our products to ensure they meet high quality standards：

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Products Description

The picture below is our production workshop:

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Products Description

Q: What is a set screw used for?

A: A set screw is a screw that is used to secure an object, by pressure and/or friction, within or against another object, such as fixing a pulley or gear to a shaft.

Q: What is a set screw?

A: A set screw is a type of fastener with a threaded shank and a non-threaded point that is inserted into a hole and tightened to secure a part or assembly. It is often used to lock a component in place or to adjust the tension of a moving part.

Q: What are the different types of set screws?

A: Set screws can be classified based on their head type, such as hex socket, square socket, or slotted. They can also be distinguished by their point type, which can be either a cone point or a flat point.

Q: What materials are set screws typically made of?

A: Set screws are commonly made of steel, stainless steel, brass, or alloy steel. The material choice depends on the required strength, corrosion resistance, and cost.

Q: What are the common applications for set screws?

A: Set screws are widely used in various applications, including machinery, automotive repairs, and electronics. They are often used to lock bearings, pulleys, gears, and other rotating components in place.

Q: How are set screws installed?

A: Set screws are installed by inserting the threaded shank into a hole and then screwing them in place. The point of the screw is designed to wedge against the sides of the hole, providing a secure lock. They can be tightened using a screwdriver, wrench, or torque wrench depending on the size and torque requirements.

Q: Are set screws reusable?

A: Yes, set screws are typically reusable if they are not damaged or corroded. However, it is important to check the condition of the screw and the hole before reuse to ensure they are still suitable for the application.

Q: What is the difference between a set screw and a machine screw?

A: The main difference between a set screw and a machine screw is the purpose and application. Set screws are designed to lock or adjust a component in place, while machine screws are primarily used for joining two or more components together.

Q: What tools are needed to install set screws?

A: To install set screws, you will typically need a screwdriver or wrench that fits the head of the screw. For hex socket or square socket set screws, you may need a hex key or allen key.

Q: Are there any safety considerations when using set screws?

A: When using set screws, it is important to ensure that the screw and the hole are properly matched and aligned. Overtightening can damage the threads or the material, while undertightening may result in the screw not locking securely. Always use the correct tools and follow the manufacturer's recommendations for torque settings.

Q: How are set screws measured?

A: As mentioned, a set screw is fully threaded along the length of the body, therefore the length is stated by the measurement from under the head to the end. The length of a bolt is also stated by the measurement from under the head to the end, but the length of the thread is determined by the diameter, as shown above.

Q: What are the advantages of set screws?

A: Compact size: Set screws are small and compact, making them easy to use in tight spaces where other fasteners may not fit. Easy to Install: Set screws can be easily installed using an Allen wrench, making them a popular choice for DIY projects and other applications where quick and easy installation is essential.

Q: How do I choose the right size and type of set screw?

A: Choosing the right size and type of set screw depends on the application and the materials being used. Consider the diameter of the hole, the required strength, and the specific head and point type needed. Manufacturers typically provide charts or tables to help select the appropriate size and type based on the application.

Q: How are set screws classified?

A: Traditionally classified within the Socket family of products, Set Screws are comprised of 3 main parts: the drive, the thread and the point. They (generally) have a hexagonal drive on one end, and a point on the other.

Q: Can you drill a set screw?

A: When drilling a hole for a set screw it is important not to over-drill the hole otherwise you may install the screw too far inside the installation material. Before you begin drilling the hole, measure the set screw against the tip of the drill bit and wrap blue tape around the drill where the screw ends.

Q: What are the different types of set screws?

A: There are several types of set screw points available, which are often confused with hexagon set screws as we know them. These include cone point, cup point, flat point, knurled cup point, oval point, and half-dog point.

Q: What type of screw is strongest?

A: As far as fasteners go, several heavy-duty industrial bolts outclass the rest. However, in the world of screws, the self-tapping screw is often seen as one of the strongest and most versatile options.

Q: How big are set screws?

A: Common sizes range from #0 to #12 and 1/4" to 1 1/2"—small sizes are expressed as whole numbers and large sizes as fractional inches—and lengths span from 1/16" to 6" for socket set screws. For square head set screws, available sizes are from #8 to #12 and 1/4" to 1 1/2", while lengths range from 7/32" to 12".

Q: Are all set screws the same?

A: Set screws have different point types based on the characteristics required out of them. A few examples of its point types are, plain cup, knurled cup, flat, oval, cone, half dog, and soft tipped. Here are a few pros and cons of the different types of set screws.

Q: What do set screws prevent?

A: Set screws are widely used in all manner of engineering, product design and repair applications, often to keep a potentially moving part locked in place. This could involve fixing a component against a baseplate, for example, in various sorts of panel arrays and mechanical assemblies.

As one of the most professional set screws manufacturers and suppliers in China, we're featured by customized hardware products made in China. Please rest assured to buy or wholesale high quality set screws for sale here from our factory. For price consultation, contact us.

Alloy Steel Cone Point Set Screws, socket head set screw