3/8-16 x 3/4 Flat Point Alloy Steel Socket Set Screw with Nylon Insert provides flat-face contact for controlled friction hold in machinery where shaft scarring is a concern. 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.
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.
For replacement work, Cold Headers helps keep thread, length, material story, point style, and insert function aligned. 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: 3/8-16
- Length: 3/4 in.
- Drive: Internal Hex
- Hex Key Size: 3/16 in.
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 9/64 in.
- Nylon Insert Location (N): 1/4 in., +/-1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
