6-40 x 3/8 Flat Point Alloy Steel Socket Set Screw with Nylon Insert is built for no-mark clamping where a broad flat face bears against the shaft instead of biting into it. 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.
Drive collars and light hub assemblies may specify this style when shaft protection matters more than a point bite.
In-house pellet installation supports uncommon flat point nylon-insert requirements when a standard plain screw is not enough. Cold Headers supports industrial distributors, OEM buyers, and maintenance teams when a set screw must match the existing print. 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.
