What Are Socket Screws

Socket screws are a type of screw designed and manufactured with a hexagonal (hex) internal drive built into the head. As such, they are intended to be tightened and loosened with an Allen wrench or hex key, as opposed to a traditional screwdriver.

What are socket head screws used for?

Socket head cap screws are a special type of fastener. Socket head cap screws are typically used in machine parts, die fixturing, and clamping. Socket head cap screws are ideal for applications in which there is not enough space to maneuver wrenches or sockets.

Do socket head cap screws need washers?

Flanged Socket Head Screws Eliminate the need for a separate washer—these screws distribute pressure where the screw meets the surface without taking up as much space as a washer.