5-40 x 3/16 Flat Point Alloy Steel Socket Set Screw with Nylon Insert fits applications that need a headless internal-hex screw, broad point contact, and a locking insert. The flat point clamps by friction, so it is commonly chosen for shafts that should not be intentionally marked by a biting point. Use the heat-treated alloy steel body with the nylon locking pellet where the application calls for mechanical fastening rather than stainless material.
Large 5/8 flat point nylon-insert sizes support heavier collars and hubs where the print still calls for shaft-friendly contact. 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.
The catalog keeps this family separate from plain flat point screws so the nylon insert requirement remains visible. Check size, socket, pellet dimensions, and surface-marking tolerance before substitution.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
