4-40 x 1 3/4 Brass Button Head Socket Cap Screw is specified where engineers want a smooth exposed head, socket-drive access, and the electrical advantages of non-ferrous construction. The broader bearing surface can be helpful on covers, light brackets, and equipment panels where the head remains visible. The material supports clean machining and a finished look for commercial hardware, instruments, and visible assemblies.
Appropriate uses include electrical assemblies and control panels, where conductivity and non-magnetic construction can be useful around selected hardware and instrumentation layouts. It can also fit electronic equipment and display hardware, where a decorative appearance and lower head projection help exposed hardware look intentional. The internal hex drive supports socket-key installation in compact equipment without relying on an external wrenching surface.
For the 4-40 thread and 1 3/4 in. length, the reference head diameter is 0.201-0.213 in. and the head height is 0.051-0.059 in. Use the verified dimensions below when checking head projection, socket access, and replacement fit.
Reference dimensions may vary slightly by manufacturer.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.