4-40 x 1 1960 Series Alloy Steel Socket Head Cap Screw with Nylon Insert combines alloy steel construction, an internal hex drive, and a nylon locking insert in one cataloged fastener. The prevailing-torque insert is useful when a drawing specifies a socket head cap screw with a nylon locking element rather than a standard socket screw.

Common uses include brackets, machinery panels, and access covers, where a precise socket head fastener with added loosening resistance can simplify maintenance and replacement planning. For replacement work, matching the thread, length, pellet diameter, and pellet location helps align the part with service records and existing hardware.

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: 4-40
• Length: 1 in.
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 1/16 in.
• Nylon Insert Location (N): 7/64 in. +/- 1/2 pitch

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