This 1/4-28 x 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.

Common uses include tooling, inspection fixtures, and precision assemblies, where a precise socket head fastener with added loosening resistance can simplify maintenance and replacement planning. Selection should account for joint geometry, thread engagement, installation access, and whether a nylon insert is appropriate for the service environment.

Cold Headers has supplied specialty socket fasteners since 1962 and supports exact-size sourcing for difficult-to-find socket products.

Technical Highlights

• Series: 1960 Series
• Material: Alloy Steel
• Thread Size: 1/4-28
• Length: 4 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.