The 5/8-18 x 3 Cup Point Square Head Set Screw is made for applications where a square external head remains easier to grip than an internal drive. Because there is no internal recess, the drive is less likely to pack with debris during plant maintenance or field repair.

Heavy collars and couplings may use cup point square heads when the installation favors visible external wrench flats.

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: 3 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.