5/16-24 x 1/2 Cup Point 18-8 Stainless Steel Socket Set Screw with Nylon Insert places the cup rim at the workpiece and the nylon insert at the mating thread. The point focuses contact at the work surface, and the pellet creates prevailing torque after the screw is driven into the tapped hole. Use 18-8 stainless where the drawing calls for stainless material in indoor machinery, washdown-adjacent equipment, or humid service.
Typical uses include conveyor guide rails, adjustment blocks, and shaft collars, where the set screw must hold position without an external head. For torque-once settings without a pellet, compare 18-8 Socket Set Screws in the appropriate point style.
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: 5/16-24
- Length: 1/2 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.
