12-28 x 3/8 Alloy Steel Button Head Socket Cap Screw supports compact fastening in assemblies where a cylindrical socket head would project farther from the surface. The alloy steel construction works in maintenance applications where replacement hardware must match the specified button-head geometry.
Designers often specify it for material-handling systems and commercial equipment where the lower rounded profile helps limit snag points. It can also serve 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.
When checking fit for the 12-28 thread and 3/8 in. length, the reference head diameter is 0.383-0.413 in. and the head height is 0.104-0.117 in. The nominal body diameter and hex-key information below support counterbore planning, socket access, and replacement matching.
Reference dimensions may vary slightly by manufacturer.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
