7/8-9 x 1 3/4 is a low carbon steel, case hardened square head set screw for wrench-driven holding where an external square head is acceptable.
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.
Cold Headers supports square-head set screw sourcing with a catalog organized around exact size, standard, and point selection. Review the selected point, wrench clearance, and mating feature before substitution. 316 stainless square-head versions can be reviewed as non-catalog quote requests when the application requires that material.
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)
- Length: 1 3/4 in.
- 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.
