3/8-16 x 3/8 Cup Point 18-8 Stainless Steel Socket Set Screw with Nylon Insert uses two locking interfaces in one headless fastener. The cup point's hollow rim bears on the shaft or mating part, while the nylon insert presses against the female thread to help resist back-out. For final material selection, consider moisture, cleaning exposure, mating material, and whether 18-8 is suitable for the service conditions.
This size is often reviewed for collars and couplings on washdown conveyors, set collars, and shaft-mounted guides when stainless material and thread locking are both specified. If an all-metal holding feature is preferred, review Knurled Point 18-8 Socket Set Screws for mechanical ratchet-style grip.
Cold Headers installs the locking pellet in-house on supported socket set screw sizes, with odd-size requests handled through quoting. Review the thread size, length, hex key size, point style, and set-screw pellet location before matching the part to a service record or drawing.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
