5/16-18 x 1 Flat Point Alloy Steel Socket Set Screw with Nylon Insert is a compact locking set screw for parts that need internal hex access and a non-penetrating point. A prepared flat on the shaft gives the point a full-width seat and improves holding contact without penetration. Use the heat-treated alloy steel body with the nylon locking pellet where the application calls for mechanical fastening rather than stainless material.
Fixtures that move between production runs may use the flat face to reduce surface damage during repeated clamping. ASME B18.3 places flat point diameter in a qualitative band of about 0.55-0.62 times nominal screw diameter, so confirm the mating seat rather than substituting a sharp point.
Cold Headers has supplied specialty socket fasteners since 1962 and keeps point style, insert type, and size language clear. 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.
