5/16-24 x 3/8 Oval Point Alloy Steel Socket Set Screw with Nylon Insert is built for adjustable contact where a rounded point should bear smoothly instead of biting sharply. A shallow prepared groove around the shaft lets the point ride axially while still allowing repositioning. Specify the heat-treated alloy steel body with nylon pellet when the print calls for mechanical set screw hardware, not a stainless substitute.
Machine rebuilds use this family when the service record calls for alloy steel, an oval point, and a nylon insert.
The nylon pellet is added to create thread drag while leaving the rounded point responsible for mating-surface contact. Since 1962, Cold Headers has helped buyers distinguish similar socket set screws by point geometry and locking feature. Check thread size, length, socket size, pellet dimensions, groove or seat condition, and surface-marking tolerance before substitution.
Technical Highlights
- Point: Oval (rounded radiused tip)
- Material: Alloy Steel
- Thread Size: 5/16-24
- Length: 3/8 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): 7/32 in., +/-1/2 pitch
- Dimensional Standard: ASME B18.3
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
