A flat head cap screw is an externally threaded fastener with unified threads. It has a cylindrical head with a flat chamfered top surface. Not only that but it has knurled cylindrical sides and a hexagonal recess.
A flat head cap screw is an externally threaded fastener with unified threads. It has a cylindrical head with a flat chamfered top surface. Not only that but it has knurled cylindrical sides, and a hexagonal recess