7/8-9 x 1 1/2 Cup Point Square Head Set Screw fits older and current equipment that relies on square flats for set screw adjustment. The cup point creates localized contact with the mating surface, while the external flats give the installer a direct wrenching surface.

Equipment rebuilds can require fine-thread square heads when the original adjustment range depends on the specified thread pitch.

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: 7/8-9 (Class 2A)
• Length: 1 1/2 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.