For drawings that call out a wrench-driven set screw, 3/4-10 x 4 identifies the coarse thread, length, material class, and square head geometry.

Typical applications include agricultural equipment with exposed mechanisms and field-adjusted stops. Because point style changes the mating contact, buyers should specify Half Dog, Full Dog, Cone, Oval, or Flat with the size. External wrench access is useful when an internal socket recess would be hard to keep clear.

Cold Headers supports legacy square-head set screw requests where exact size and point selection matter more than generic substitution. Review the selected point, wrench clearance, and mating feature before substitution. Flat points bear against a machined flat without intentional penetration into the mating surface.

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: 3/4-10 (UNC)
• Thread Fit: 2A (per ASME B18.6.2)
• Length: 4 in.
• Width Across Flats (F): 0.750 / 0.729 in. (max/min)
• Across Corners (G): 1.060 / 1.001 in. (max/min)
• Head Height (H): 0.582 / 0.544 in. (max/min)
• Dimensional Standard: ASME B18.6.2

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.