5/8-18 x 5/8 Flat Point Alloy Steel Socket Set Screw with Nylon Insert uses a flat point to protect finished or hardened mating surfaces while the insert adds thread friction. 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.
Drive collars and light hub assemblies may specify this style when shaft protection matters more than a point bite.
In-house pellet installation supports uncommon flat point nylon-insert requirements when a standard plain screw is not enough. Large 5/8 flat point locking set screws are not always easy to source through general-line channels. 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: 5/8-18
- Length: 5/8 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.
