1-8 x 2 1/4 Cup Point Square Head Set Screw supports traditional wrench-driven set screw service in heavy mechanical assemblies. The open square head is useful when a standard wrench is preferred and the drive must stay visible during adjustment.

Common applications include crushers and aggregate equipment, where exposed wrench flats remain easy to reach during service. For compact headless retention with key access, compare cup point socket set screws in alloy steel or 18-8 stainless steel.

For older machinery and uncommon set screw callouts, Cold Headers helps match the requested diameter, length, head style, and point configuration. 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: 1-8 (Class 2A)
• Length: 2 1/4 in.
• Width Across Flats: 1.000 max / 0.974 min in.
• Width Across Corners: 1.414 max / 1.337 min in.
• Head Height: 0.774 max / 0.726 min in.
• Cup Point Diameter: 0.609 max / 0.579 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.