5/16-24 x 1/2 Cone Point Alloy Steel Socket Set Screw with Nylon Insert is a headless internal-hex fastener for set screw assemblies that need both shaft interlock and thread-level locking action. In a properly prepared seat, the conical point can resist rotation and axial slip through geometry rather than clamp friction alone. Use this alloy steel body with the nylon locking pellet where the drawing calls for a mechanical set screw, not a corrosion-focused stainless part.
Drive collars, couplings, and shaft-mounted stops can use this style when a stronger locating action is needed than a flat contact face.
The locking pellet is installed after the screw body is identified, keeping the insert function separate from the cone point geometry. Cold Headers has worked with specialty socket fasteners since 1962 and supports exact thread-and-length identification for repair and production work. Review thread size, length, hex key size, point style, and mating-surface marking tolerance before replacing it with another set screw.
Technical Highlights
- Point: Cone (tapered conical point)
- Material: Alloy Steel
- Thread Size: 5/16-24
- Length: 1/2 in.
- Drive: Internal Hex
- Hex Key Size: 5/32 in.
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 1/8 in.
- Nylon Insert Location (N): 19/64 in., ±1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
