5/8-11 x 2 1/2 is a square head machine set screw for assemblies that need point-style selection and direct wrench access.

Typical applications include retrofit work where the mating hole, flat, or seat determines the point style. The five-point structure lets the same square-head size serve locating, bearing, and seating requirements. External wrench access is useful when an internal socket recess would be hard to keep clear.

Since 1962, Cold Headers has helped industrial buyers identify specialty set screws by thread, length, head style, and point requirement. Review the selected point, wrench clearance, and mating feature before substitution. When the assembly cannot accept an exposed square head, compare headless socket set screw families before substituting.

Technical Highlights

• Head: Square, wrench-driven
• Material: Low Carbon Steel, Case Hardened
• Point Styles: Half Dog, Full Dog, Cone, Oval, Flat (specify at order)
• Thread Size: 5/8-11 (UNC)
• Thread Fit: 2A (per ASME B18.6.2)
• Length: 2 1/2 in.
• Width Across Flats (F): 0.625 / 0.606 in. (max/min)
• Across Corners (G): 0.884 / 0.833 in. (max/min)
• Head Height (H): 0.485 / 0.452 in. (max/min)
• Dimensional Standard: ASME B18.6.2

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.