For drawings calling out a nylon insert socket cap screw, the 1/4-20 x 3 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.
The 1/4-20 x 3 size is often reviewed for maintenance repairs, replacement assemblies, and retrofit work when the bill of materials calls for an alloy steel cap screw with a nylon insert. 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.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
