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5/16-18 x 3/4 Cup Point Square Head Set Screw is a plain-finish carbon steel fastener for square-head set screw specifications. The square flats also make the part recognizable on older assemblies that were designed before headless hex-socket set screws became common.

Mill and grinder adjustments use this style where rugged wrench access is part of the original machine design.

Use Cold Headers when the requirement is specific: square head, cup point, carbon steel, Class 2A thread, and the length shown on the drawing. 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: 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.

Unit of Measure

Specifications

Brands

 N/A Cold Headers, Inc.

Diameter

 N/A 5/16-18

Length

 N/A 3/4 in

Material

 N/A Carbon Steel

Shape

 N/A Square

Quantity

 N/A 100

Package Type

 N/A Box

Search

 N/A CPSHSS.5/16-18.3/4

Note

Note

 N/A Less Than Package Quantity Specified Plus 25%.

1 1/8" Diameter and Larger also Stocked Prices on Application.