5/16-18 x 2 1/2 1960 Series 18-8 Stainless Steel Socket Head Cap Screw with Nylon Insert is a stainless socket cap screw for assemblies that combine cleaning exposure with motion or vibration. 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 rounded exposed heads with the same locking concept, review 18-8 Button Head Socket Cap Screws with Nylon Insert. Cold Headers installs nylon inserts in-house for supported socket-cap configurations, with odd-size sourcing handled through the quote process.

Technical Highlights

• Series: 1960 Series
• Material: 18-8 Stainless Steel
• Thread Size: 5/16-18
• Length: 2 1/2 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.