5/16-24 x 3 1960 Series 18-8 Stainless Steel Socket Head Cap Screw with Nylon Insert combines the familiar socket head profile with a nylon insert for added loosening resistance. The pellet presses against the mating thread to provide prevailing torque without changing the socket head geometry.

Typical applications include instrumentation panels, sensor brackets, and compact machine frames, where the exact thread and length help match drawings, service records, and replacement needs. The nylon element gives the joint a locking feature, but it also limits service temperature compared with an all-metal socket screw.

For torque-once joints where a locking pellet is not required, plain 18-8 Socket Head Cap Screws may be the simpler routing. Cold Headers has supplied specialty socket fasteners since 1962 and helps source exact stainless sizes and uncommon lengths.

Technical Highlights

• Series: 1960 Series
• Material: 18-8 Stainless Steel
• Thread Size: 5/16-24
• Length: 3 in.
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 1/8 in.
• Nylon Insert Location (N): 13/64 in. +/-1/2 pitch
• Head Dimensions: ASME B18.3, 1960 Series

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.