Wisine Fasteners & Metal has the capability to manufacture bolts & Nuts,special screws and special profile customized for your company. Special tooling can be created to produce nonstandard dimensions or with your company’s name and/or logo. 17-4 Sockets Head Cap Screws An externally threaded fastener with unified threads, a cylindrical head with a chamfered top surface, knurled cylindrical sides and hexagonal recess, made from alloy Steel. Ideal for precision assembly work with close tolerances and applications needing a well tooled appearance