Custom Hexagon Socket Head Bolts

Bolts with a hexagonal hole on a cylindrical head that's fastened with a hex wrench. Although they are also called cap screws or socket screws, the most common names are "hexagon socket head cap screw" and "cap bolt". It has the characteristics of compact structure, beautiful appearance, easy installation and so on. The cylindrical head hex socket screws are generally used on various machine tools and their accessories, and can replace the hex head bolts.

We support customized and can also manufacture non-standard fasteners according to your drawings.


 Half Thread (Partial Thread) , Full Thread.


 DIN, ASTM/ANSI, JIS, ISO, GB and so on.


 Dia M5 - M16 & Lengths 10mm - 140mm


 Metric Coarse & Fine


 Property Class 4.8, 8.8, 10.9, 12.9


 Q195, 35K, 10B21,40Cr, 35CrMo

Surface Treatment

 Plain, Zinc Plated & Zinc Yellow, Blackening, Ni Plated


 They are used for critical vehicle applications, machine tools, tools and dies, earth moving and mining machinery, and a wide range of engineering applications. The most important reasons for the increasing use of socket head cap screws in industry are safety, reliability and economy.

Taizhou First Rivet Co.,Ltd.
As a famous Custom Hexagonal Head Bolts Suppliers and Custom Hexagon Socket Head Bolts,Taizhou First Rivet Co.,Ltd. founded in 1991, is a specializes in researching, developing, producing and selling bolts and rivets manufacturers and factory. It covers an area of 13,834 square meters and has convenient transportation.

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Our main customers are domestic first-class and second-class OEM suppliers, and our automobile hollow rivets and other products are exported to
Europe, America,the Middle East, Africa, Southeast Asia and more than 20 countries.

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Industry Knowledge Extension

Understanding the Use of Hexagon Socket Head Bolts in Various Industries

Hexagon socket head bolts, also known as Allen bolts, are widely used in various industries for their reliability and strength. They are commonly used in applications where a clean, streamlined appearance is desired, and where access to the bolt head is limited. Understanding the use of hexagon socket head bolts can help ensure that they are applied correctly in various industrial settings.

(1) Applications: Hexagon socket head bolts are used in a variety of applications, including machinery, electronics, automotive, and aerospace industries. They are commonly used in applications where a low-profile head is required, and access to the head of the bolt is limited. They are also preferred in applications that require high torque values and where vibration or shock loading is a concern.

(2) Materials: Hexagon socket head bolts can be made from a range of materials, including stainless steel, carbon steel, and alloy steel. The material used for the bolt will depend on the application and the specific requirements of the industry. For example, stainless steel hexagon socket head bolts are commonly used in the food and beverage industry due to their corrosion resistance.

(3) Strength and Durability: Hexagon socket head bolts are known for their strength and durability. The socket head design distributes the load over a larger area, reducing stress on the bolt and increasing its strength. The use of high-quality materials and precise manufacturing processes further enhance the strength and durability of hexagon socket head bolts.

(4) Installation: Installing hexagon socket head bolts requires the use of a hex key or Allen wrench. It is important to use the correct size of the hex key to avoid damaging the bolt head. The correct torque must also be applied during installation to ensure that the bolt is tightened to the required level without exceeding its yield strength.

(5) Maintenance: Regular maintenance of hexagon socket head bolts is essential to ensure their continued reliability and performance. This includes inspecting the bolts for signs of wear or damage and replacing them as necessary. It is also important to use the correct replacement bolts to maintain the integrity of the application.

Some Common Mistakes When Using Hexagon Socket Head Bolts

Hexagon socket head bolts are widely used in various applications due to their high strength and reliability. However, improper installation or use of these bolts can lead to performance issues and compromise the integrity of the connection. To avoid these problems, it is important to be aware of some common mistakes and how to prevent them.

One common mistake is over-tightening the bolt. This can lead to the bolt stretching beyond its elastic limit, which can cause it to break or lose its clamping force over time. It is essential to follow the recommended torque specifications for the bolt and to use a torque wrench to ensure accurate tightening.

Another mistake is using the wrong socket size or type. It is crucial to use the correct socket size and type for the bolt to avoid damaging the bolt head and to ensure proper tightening.

Using damaged or worn-out sockets can also lead to improper tightening and damage to the bolt head. It is important to inspect sockets regularly for signs of wear and replace them as needed.

Failing to clean and lubricate the threads and bolt head can also cause issues during installation. Dirt, debris, or rust can interfere with the clamping force and cause the bolt to seize during tightening or loosening. It is recommended to clean and lubricate the bolt threads and head before installation to ensure smooth and efficient tightening.

Lastly, mixing different types of bolts or using bolts of the wrong material can also lead to performance issues and connection failure. It is crucial to use bolts that meet the required specifications for the application and to avoid mixing different types or grades of bolts.

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