4-40 x 1 1/4 18-8 Stainless Steel Button Head Socket Cap Screw with Nylon Insert supports stainless fastening in washdown-adjacent machinery without changing button-head geometry. The locking pellet adds a prevailing-torque feature while the internal hex drive keeps installation compact from the top side.
The low-dome head is not a countersunk style; seating and clearance should be checked against the mating surface and surrounding equipment. For display and fixture hardware, decorative covers, or light-duty brackets, confirm the mating thread, drive access, and whether surface contact from the button head suits the assembly.
18-8 stainless is practical for washdown-adjacent machinery, packaging equipment, and outdoor or high-touch hardware where the service environment is not chloride-critical. If strength matters more than stainless material, Alloy Steel Button Head Socket Cap Screws with Nylon Insert may be the better route. Cold Headers installs the locking pellet in-house for supported socket-cap sizes, with odd-size requests handled through quoting.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
