4-40 x 1/2 Cone Point Alloy Steel Socket Set Screw with Nylon Insert gives engineers a cone point for mechanical interlock and a nylon insert for resistance in the mating thread. This double-action layout combines point seating at the shaft with prevailing torque inside the threaded hole. 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.
Industrial repair work sometimes calls for cone point nylon-insert screws when removal access is from the socket end only. Where shaft marking must be minimized, Flat Point Alloy Set Screws with Nylon Insert are the more appropriate comparison.
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: 4-40
- Length: 1/2 in.
- Drive: Internal Hex
- Hex Key Size: 0.050 in.
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 1/16 in.
- Nylon Insert Location (N): 1/8 in., ±1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
