When dirt, oil, or frequent adjustment makes internal recesses less convenient, the 5/16-24 x 5/8 Cup Point Square Head Set Screw keeps the drive accessible. This pattern remains valuable on equipment where operators repeatedly loosen, reset, and tighten the same fastener.

Mixer and auger shafts may specify square heads so crews can reset collars, hubs, or followers without a special key. For square-head specifications that call for half dog, full dog, flat, cone, or oval points, review the broader Square Head Set Screws family.

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: 5/16-24 (Class 2A)
• Length: 5/8 in.
• Width Across Flats: 0.312 max / 0.302 min in.
• Width Across Corners: 0.442 max / 0.415 min in.
• Head Height: 0.245 max / 0.224 min in.
• Cup Point Diameter: 0.172 max / 0.156 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.