When dirt, oil, or frequent adjustment makes internal recesses less convenient, the 5/16-18 x 1 3/4 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.

Outdoor and quarry equipment may use the open head because mud, dust, and grease are easier to clear from flats than from a recess. For compact headless retention with key access, compare cup point socket set screws in alloy steel or 18-8 stainless steel.

Cold Headers is a practical sourcing contact when a print still calls for square-head cup point hardware in a specific size. 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: 5/16-18 (Class 2A)
• Length: 1 3/4 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.