4-40 x 5 1/2 18-8 Stainless Steel Hex Head Cap Screw is an externally driven fastener for wrench or socket installation from the side of the head. In this size range it is treated as a hex head machine screw, with the hex head driven by external tooling rather than an internal socket.
Common application reviews include outdoor hardware, equipment covers, and access panels. When the design calls for a recessed counterbored fastener or tighter tool clearance, compare 18-8 Socket Head Cap Screws.
18-8 stainless steel is an 18% chromium and 8% nickel austenitic stainless material used for ordinary atmosphere, moisture exposure, washdown, and clean appearance. Cold Headers has supplied specialty fasteners since 1962 and supports exact-size sourcing for hard-to-find industrial hardware.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
