6-40 x 2 1/2 Alloy Steel Button Head Socket Cap Screw provides a button-head geometry for assemblies that need a finished appearance and internal hex drive engagement. The alloy steel construction is selected for production equipment where a lower-profile head is preferred on exposed fastening points.
Engineers may use it on material-handling systems and commercial equipment where the lower rounded profile helps limit snag points. This geometry also fits guards and access panels when maintenance crews can remove covers without extra external wrench clearance. This head style is different from a standard socket head cap screw: it trades the taller cylindrical head form for a rounded button profile used on exposed assemblies.
For drawings using the 6-40 thread and 2 1/2 in. length, the reference head diameter is 0.250-0.262 in. and the head height is 0.063-0.073 in. The nominal body diameter and hex-key information below support fit checks, tool access planning, and replacement verification.
Reference dimensions may vary slightly by manufacturer.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
