4-40 x 3/8 18-8 Stainless Steel Button Head Socket Cap Screw with Nylon Insert brings stainless material and a nylon locking pellet to equipment that sees ordinary moisture or cleaning. The nylon pellet presses against the mating thread for prevailing torque without changing the head geometry.
The rounded button head can reduce exposed edges, spread bearing load over a broader face, and avoid counterbore machining when the assembly accepts a raised dome. In food equipment panels, washdown covers, or stainless frame hardware, the internal hex drive supports top-side installation while the rounded head reduces surface projection.
The 18% chromium and 8% nickel austenitic stainless material is commonly chosen for general corrosion resistance, clean appearance, and ordinary moisture exposure. For higher preload potential with a deeper socket, compare 18-8 Socket Head Cap Screws with Nylon Insert. Nylon inserts are installed in-house at the Chicago facility for supported cap-screw configurations.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
