Use the 7/8-9 x 7/8 Cup Point Square Head Set Screw where drawings specify a protruding square head and cup point rather than a headless style. It is a practical choice when top-side wrench access is available and a protruding head is acceptable in the design.
Production fixtures and adjustment stops sometimes retain square-head set screws for fast visual confirmation and wrench access. Because a square head protrudes and rotates with the shaft, exposed rotating assemblies near personnel may call for a guarded headless set screw instead.
Cold Headers supports industrial distributors, repair teams, and OEM buyers who need a precise thread, length, and point style without substituting geometry. 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: 7/8-9 (Class 2A)
- Length: 7/8 in.
- Width Across Flats: 0.875 max / 0.852 min in.
- Width Across Corners: 1.237 max / 1.170 min in.
- Head Height: 0.678 max / 0.635 min in.
- Cup Point Diameter: 0.530 max / 0.502 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.
