1/4-28 x 3/4 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 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.
OEM assemblies pairing flats on shafts with flat points use the mating geometry to spread contact across the seat. 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 can quote the requested flat point nylon-insert configuration without changing the point style to a biting design. 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: 1/4-28
- Length: 3/4 in.
- Drive: Internal Hex
- Hex Key Size: 1/8 in.
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 7/64 in.
- Nylon Insert Location (N): 3/16 in., +/-1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
