5/16-18 x 1 Cup Point Square Head Set Screw is a case hardened carbon steel set screw built around an external square head instead of a recessed drive. The open square head is useful when a standard wrench is preferred and the drive must stay visible during adjustment.
Packing gland and follower adjustments are typical service points where wrench-driven set screws are still specified. Where a protruding head will not clear the design, Cup Point Slotted Headless Set Screws provide a screwdriver-driven headless alternative.
Square-head cup point screws in fine thread and extended lengths can be difficult to source, so the SKU detail should be checked closely. The thread, length, across-flats size, head height, and cup point diameter should be checked against the print before purchase.
Technical Highlights
- Head: Square, wrench-driven; flats match nominal size
- Point: Cup Point
- Thread Size: 5/16-18 (Class 2A)
- Length: 1 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.
