sl sales Bolt M3 X 12MM Allen Bolt Cap Screw (Allen Key Free)Socket Head Cap Screws Grade 12.9 Alloy Steel Black Oxide(Pack Of 10)  (Carbon Steel)

Socket caps have a small cylindrical head with tall vertical sides. Allen hex socket drive is a six-sided recess for use with an allen wrench (hex key). Socket head cap screws are commonly used in machine assembly for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive. Longer caps are easier to see when fastened, while button and flat head caps are less likely to snag clothing or linkages.