5/16-18 x 5/16 Cup Point 18-8 Stainless Steel Socket Set Screw with Nylon Insert is a headless socket set screw for compact shaft and component retention. The point focuses contact at the work surface, and the pellet creates prevailing torque after the screw is driven into the tapped hole. For final material selection, consider moisture, cleaning exposure, mating material, and whether 18-8 is suitable for the service conditions.
In small sprocket hubs, couplings, and repair assemblies, the internal hex drive allows adjustment from the end of the tapped hole. For 316 stainless with a nylon insert, treat the requirement as a non-catalog request that Cold Headers can quote.
Nylon inserts are installed in-house at the Cold Headers Chicago facility for supported set-screw configurations. 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.
Technical Highlights
- Point: Cup point, approx. 0.55-0.62 x nominal dia.
- Material: 18-8 Stainless Steel
- Thread Size: 5/16-18
- Length: 5/16 in.
- Drive: Internal Hex
- Hex Key Size: 5/32 in.
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 1/8 in.
- Nylon Insert Location (N): 7/32 in. +/-1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
