Wholesale Hex Head Bolts

Hex bolts are a type of threaded bolt, characterised by their six-sided hexagonal-shaped head. Hex bolts can be either fully threaded or partially threaded and are suitable for use in a wide range of applications, typically machinery and construction.

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


 Their primary use is for heavy-duty fixing and fastening applications. This could include: Within construction projects,during the erection, repair, and maintenance of buildings, bridges, and road infrastructure, machinery assemblies, woodworking tasks such as fastening frames, engineering applications, vehicle and automotive.

Taizhou First Rivet Co.,Ltd.
As a famous China Hex Head Threaded Bolt and Wholesale Hex 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

Difference Between Partially Threaded Hex Head Bolts and Fully Threaded Ones?

The difference between a partially threaded Hex Head Bolt and a fully threaded one lies in the extent to which the threading extends up the length of the shank. The threading on a Hex Head Bolt refers to the spiral grooves that are cut into the length of the bolt to allow it to be screwed into a threaded hole or nut.

In Hex Head Bolts, the threading can extend partially up the shank, or it can extend the entire length of the shank. A partially threaded Hex Head Bolt typically has threading that only extends up to a certain point on the shank, usually stopping before it reaches the head of the bolt. Conversely, a fully threaded Hex Head Bolt has threading that extends the entire length of the shank, all the way up to the underside of the head.

The choice between partially threaded and fully threaded Hex Head Bolts depends on the application in question. In some cases, it may be desirable to use a partially threaded bolt in order to provide a certain amount of space between the underside of the bolt head and the component being fastened. This spacing may be necessary in order to allow for the use of a nut or washer beneath the head of the bolt. In other instances, a partially threaded bolt may be preferable when the application requires a certain amount of flexibility or movement between the components being fastened.

On the other hand, fully threaded Hex Head Bolts can offer additional clamping force and stability when securing components tightly together. This is because the threading runs the entire length of the shank, allowing the bolt to engage directly with the component being fastened, and providing additional surface area for the application of torque when tightening the bolt. Fully threaded Hex Head Bolts are typically used in applications where the components being fastened need to be held tightly together, and movement or flexibility is not required.

Factors for correct torque on hex bolts during installation?

When installing hex head bolts, it is essential to determine the correct torque to apply to ensure proper tightening and avoid any potential issues with the connection. Several factors need to be considered when determining the appropriate torque for hex head bolts:

(1)Thread size and pitch: The thread size and pitch of the bolt play a significant role in determining the torque. Larger bolts with coarser threads require more torque to achieve the same level of tightness compared to smaller bolts with finer threads.

(2)Material: The material of the bolt and the material of the mating surfaces must be considered when determining the torque. The type of material can affect the frictional forces between the bolt and the surfaces, which, in turn, affects the required torque.

(3)Lubrication: The use of lubrication can significantly affect the required torque. Lubricants can reduce the frictional forces and, in turn, reduce the required torque. It is essential to use the correct type and amount of lubricant to avoid over or under-tightening the bolts.

(4)Bolt length: The length of the bolt also plays a role in determining the torque required. Longer bolts require more torque to achieve the same level of tightness compared to shorter bolts.

(5)Environmental factors: The environment in which the bolt is installed can affect the required torque. Factors such as temperature, humidity, and vibration can all impact the torque required for proper tightening.

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