This 1/4-28 x 3/8 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 1/4-28 x 3/8 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.

Cold Headers supports distributors, OEM sourcing teams, and maintenance operations that need uncommon lengths or exact 1960 Series socket screw sizes.

Technical Highlights

• Series: 1960 Series
• Material: Alloy Steel
• Thread Size: 1/4-28
• Length: 3/8 in.
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 7/64 in.
• Nylon Insert Location (N): 3/16 in. +/- 1/2 pitch

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