For hard-working shafts, collars, and adjustments, the 3/8-16 x 1 1/2 Cup Point Square Head Set Screw provides a cup point with a four-flat wrench head. 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. Because a square head protrudes and rotates with the shaft, exposed rotating assemblies near personnel may call for a guarded headless set screw instead.

Cold Headers can help confirm pricing and availability for exact-size square-head cup point set screws without making unsupported availability promises. 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: 3/8-16 (Class 2A)
• Length: 1 1/2 in.
• Width Across Flats: 0.375 max / 0.362 min in.
• Width Across Corners: 0.530 max / 0.497 min in.
• Head Height: 0.293 max / 0.270 min in.
• Cup Point Diameter: 0.212 max / 0.194 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.