5/16-18 x 2 Cup Point Square Head Set Screw is a square-drive, cup-point set screw for assemblies where the head itself provides the wrenching surface. The square flats also make the part recognizable on older assemblies that were designed before headless hex-socket set screws became common.
Plant maintenance programs that are standardized on square-head set screws can keep one recognizable drive style across multiple machines.
When a machine still calls out square-head hardware, the exact-size listing helps avoid replacing a legacy part with the wrong drive style. Review the thread, length, square-head dimensions, and cup point diameter before substituting another set screw style.
Technical Highlights
- Head: Square, wrench-driven; flats match nominal size
- Point: Cup Point
- Thread Size: 5/16-18 (Class 2A)
- Length: 2 in.
- Width Across Flats: 0.312 max / 0.302 min in.
- Width Across Corners: 0.442 max / 0.415 min in.
- Head Height: 0.245 max / 0.224 min in.
- Cup Point Diameter: 0.172 max / 0.156 min in.
- Material: Carbon Steel, case hardened per ASME B18.6.2 (case hardness 83 HR15 minimum, case depth 0.006 in. minimum)
- Finish: Plain
- Dimensional Standard: ASME B18.6.2
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
