For drawings calling out a nylon insert socket cap screw, the 5/16-18 x 2 1/2 1960 Series Alloy Steel Socket Head Cap Screw with Nylon Insert provides exact thread-and-length identification. The nylon insert helps resist loosening through friction at the mating threads, providing prevailing torque without changing the socket head geometry.

The 5/16-18 x 2 1/2 size is often reviewed for automation equipment, robotic tooling, and fixture plates when the bill of materials calls for an alloy steel cap screw with a nylon insert. Selection should account for joint geometry, thread engagement, installation access, and whether a nylon insert is appropriate for the service environment.

Cold Headers provides catalog depth for specialty socket fasteners and helps purchasers identify the correct alloy steel nylon insert configuration.

Technical Highlights

• Series: 1960 Series
• Material: Alloy 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

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