Where a bill of material calls for a wrench-driven cup point screw, the 5/8-18 x 1/2 Cup Point Square Head Set Screw keeps the size and geometry explicit. It is a practical choice when top-side wrench access is available and a protruding head is acceptable in the design.

Older production lines and repairable plant equipment often keep these fasteners because the square head is visible and tool-friendly.

Cold Headers keeps the catalog language focused on size, geometry, material, and verified dimensions so buyers can compare parts cleanly. 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: 5/8-18 (Class 2A)
• Length: 1/2 in.
• Width Across Flats: 0.625 max / 0.606 min in.
• Width Across Corners: 0.884 max / 0.833 min in.
• Head Height: 0.485 max / 0.452 min in.
• Cup Point Diameter: 0.371 max / 0.347 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.