5/8-18 x 3/4 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. This point style is useful when the part may be loosened, slid, and reclamped during changeover or setup. Use the heat-treated alloy steel body with the nylon locking pellet where the application calls for mechanical fastening rather than stainless material.
Finished shafting, control rods, and small mechanical linkages can use a broad contact point to reduce marring. 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.
Large 5/8 flat point locking set screws are not always easy to source through general-line channels. 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.
Technical Highlights
- Point: Flat (full bearing face)
- Material: Alloy Steel
- Thread Size: 5/8-18
- Length: 3/4 in.
- Drive: Internal Hex
- Hex Key Size: 5/16 in.
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 3/16 in.
- Nylon Insert Location (N): 11/32 in., +/-1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
