Black Steel Hex Socket Round Button Head Bolt

The button socket head cap screw is designed with an inner hex drive style and dome head, providing a higher torque and clamping force, as well as offering a wider bearing surface and high tensile strength.

Available in a huge range of thread diameters from M2 to M16 as standard. Optional thread locking patches can also be supplied.

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and custom parts made to drawings.

Hex Socket Bolt Class

● DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9;

● SAE: Gr.2,5,8;

● ASTM: 307A,307B,A325,A394,A490,A449 etc.

Application

The button socket head cap screw fasteners for use in most machinery industries, automotive industries, electronics industries, manufacturing applications, die fixtures, and clamps.

Advantage

Constructed with carbon steel material with blackening treatment, the hex socket cap screw is of stronger durability, has a bright appearance, is not easier to deform or corrode, and has a long service life than other surface finishes.

Finish

Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder. It is used to add mild corrosion resistance, for appearance, and to minimize light reflection