T head bolts with shoulder

This knurled head bolt consists of a series of small ridges that are rolled onto the surface of the head, provides a better grip, making it easier to turn the bolt by hand without the need for tools.

a) External hexalobular socket (6 lobe) / metric thread / self tapping thread for thermoplastics.

b) A double-end stud with collar is a type of fastener that features threaded ends on both sides and a non-threaded central collar or flange. Thread types of both sides can be customized according to customer's request, differen surface treatment is available upon request. 

This screw features a rectangular head with a cup-shaped top.

This stud pin is produced using open die forming and features a cylindrical knurled head and a specially designed pin shape.

This is a specialized fastener designed for specific applications where the screw needs to be tightened to a specific torque.