3/4-10 x 3 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.

Conveyor drive pulleys and shaft-mounted components can use this pattern when a protruding drive head is acceptable.

Fine-thread and longer square-head sizes are a hard-to-find lane, so exact thread and length identification matters before sourcing. 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: 3/4-10 (Class 2A)
• Length: 3 1/2 in.
• Width Across Flats: 0.750 max / 0.729 min in.
• Width Across Corners: 1.060 max / 1.001 min in.
• Head Height: 0.582 max / 0.544 min in.
• Cup Point Diameter: 0.450 max / 0.425 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.