Where socket recesses can fill with debris, 3/4-10 x 5 1/2 offers an external square head that can be turned without relying on an internal drive.

Typical applications include legacy equipment repairs that need the square-head form called out on older drawings. Use the size to match the thread and length, then call out Half Dog, Full Dog, Cone, Oval, or Flat as the required point. Flat points bear against a machined flat without intentional penetration into the mating surface.

Cold Headers can review less-common square-head sizes, long lengths, and point combinations when the standard catalog matrix does not cover the need. The family runs UNC coarse thread throughout, the traditional square-head series. 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: 3/4-10 (UNC)
• Thread Fit: 2A (per ASME B18.6.2)
• Length: 5 1/2 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.