This 1/2-13 x 3 1/4 Alloy Steel Socket Head Cap Screw with Nylon Insert belongs to the Cold Headers 1960 Series for socket head cap screws with prevailing-torque nylon inserts. The insert adds prevailing-torque resistance through localized nylon contact, so the fastener can be considered where service conditions call for added loosening resistance.

The 1/2-13 x 3 1/4 size is often reviewed for tooling, inspection fixtures, and precision assemblies when the bill of materials calls for an alloy steel cap screw with a nylon insert. Engineers should confirm that the selected size, nylon insert position, and mating threads suit the assembly before substituting from a standard socket cap screw.

Since 1962, Cold Headers has helped industrial buyers source specialty socket products, unusual lengths, and replacement configurations.

Technical Highlights

• Series: 1960 Series
• Material: Alloy Steel
• Thread Size: 1/2-13
• Length: 3 1/4 in.
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 5/32 in.
• Nylon Insert Location (N): 1/4 in. +/- 1/2 pitch

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