For drawings calling out a nylon insert socket cap screw, the 3/8-16 x 4 1/2 1960 Series Alloy Steel Socket Head Cap Screw with Nylon Insert provides exact thread-and-length identification. Its nylon insert creates a frictional locking action in the threaded joint while preserving top-side internal hex drive access for installation.

In maintenance repairs, replacement assemblies, and retrofit work, the internal hex drive allows compact tool access while the alloy steel body keeps the product aligned with drawings that specify this material. Review thread size, length, mating material, available drive access, and insert location before release to production or maintenance use.

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: 3/8-16
• Length: 4 1/2 in.
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 9/64 in.
• Nylon Insert Location (N): 7/32 in. +/- 1/2 pitch

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