5/16-18 x 1 3/4 18-8 Stainless Steel Flat Head Cap Screw with Nylon Insert is a stainless countersunk fastener with a thread-mounted prevailing-torque element. The 82-degree flat head needs a matching countersink cut cleanly and concentrically so the cone bears correctly and the head seats true. For example, a 1/4-20 x 1 flat head screw fits within one inch overall because the head is included in that length.
Typical applications include retrofit vibrating panels, replacement guards, and repair covers, where nothing proud should catch passing material or hands. When chloride-heavy or saltwater-adjacent service drives material selection, ask Cold Headers about non-catalog 316 stainless nylon-insert options.
The 18% chromium and 8% nickel austenitic stainless material is commonly selected for general corrosion resistance, clean appearance, and ordinary washdown exposure. Cold Headers has supported specialty socket fastener sourcing since 1962, including exact stainless sizes and uncommon lengths.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
