5-40 x 1 Alloy Steel Button Head Socket Cap Screw is used where a rounded, lower-profile head helps keep exposed hardware compact without requiring countersinking. The alloy steel construction is used in machinery repair where a rounded head and socket-drive access help keep service work straightforward.
Typical applications include equipment housings and assembly fixtures where the button head presents a clean bearing surface on visible hardware. It also supports material-handling systems and commercial equipment when the lower rounded profile helps limit snag points. The button-head form is specified when the fastener head remains visible or accessible and a smooth rounded profile is preferred.
When checking fit for the 5-40 thread and 1 in. length, the reference head diameter is 0.226-0.238 in. and the head height is 0.058-0.066 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.
