4-40 x 1/2 Flat Point Alloy Steel Socket Set Screw with Nylon Insert supports repeated adjustment because the flat point spreads contact over a full bearing face. The internal hex drive keeps the screw headless and accessible in collars, hubs, and compact machine details. Use the heat-treated alloy steel body with the nylon locking pellet where the application calls for mechanical fastening rather than stainless material.
Typical uses include adjustable collars and stops on finished shafts where the contact mark must be controlled. Oval Point Alloy Set Screws with Nylon Insert are the better comparison when the contact angle varies across the assembly.
Cold Headers focuses on exact-size socket fastener sourcing for production, repair, and plant maintenance needs. Check thread size, length, socket size, pellet dimensions, shaft-flat condition, and surface-marking tolerance before substitution.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
