The cut off piece of hex key must be square to use as a broach. Run the hex-key broach into the workpiece to produce a hexsocket pattern. A finished lefthand 1/4-20 screw with custom head made using ...

A good collection of sockets makes it easy to loosen or tighten nuts and bolts of any size; a great collection brings the convenience of ratcheting sockets to socket head cap screws, better known as ...

Shoulder screws, also known as shoulder bolts and stripper bolts, are machine screws with an integral shoulder or journal between the head and thread. Although they are not readily available in local ...