Request Information

For size searches that do not begin with a single catalog length, 7/8-9 routes the buyer to the square head set screw family for quotation.

Typical applications include mill and conveyor drives where square-head hardware remains accessible during service. This family is ordered as one size across five point choices: Half Dog, Full Dog, Cone, Oval, and Flat. Point selection should reflect the shaft feature, acceptable marking, and expected service adjustment.

Availability-row diameters and unusually long lengths are handled as quote-driven square-head requirements by Cold Headers. Review the selected point, wrench clearance, and mating feature before substitution. Cup Point Slotted Headless Set Screws are the related headless option when flush-fitting screwdriver access is preferred.

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: 7/8-9 (UNC)
  • Thread Fit: 2A (per ASME B18.6.2)
  • Width Across Flats (F): 0.875 / 0.852 in. (max/min)
  • Across Corners (G): 1.237 / 1.170 in. (max/min)
  • Head Height (H): 0.678 / 0.635 in. (max/min)
  • 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.

Type

 N/A 1/2 Dog Cone Flat Full Dog Odd Point Oval

Material

 N/A Carbon Steel

Search

 N/A SHSS.7/8