Socket Cap Screw
The above are types of screws with a cylindrical head and an internal hexagonal drive. Full dimensional tables including product photographs and drawings are available by clicking on the item. The most common standard Socket Cap Screw is to DIN 912 in 12.9 grade, also available in 8.8 and 10.9 and in A2 and A4 stainless steel.
Socket Head Capscrew, Socket Screw or Allen Bolt Allen screw