For drawings calling out a nylon insert socket cap screw, the 1/4-28 x 1 1/4 1960 Series Alloy Steel Socket Head Cap Screw with Nylon Insert provides exact thread-and-length identification. The nylon insert helps resist loosening through friction at the mating threads, providing prevailing torque without changing the socket head geometry.
The 1/4-28 x 1 1/4 size is often reviewed for automation equipment, robotic tooling, and fixture plates 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.
Since 1962, Cold Headers has helped industrial buyers source specialty socket products, unusual lengths, and replacement configurations.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
