1/4-20 x 2 3/4 is a square head machine set screw for assemblies that need point-style selection and direct wrench access.

Typical applications include retrofit work where the mating hole, flat, or seat determines the point style. Use the size to match the thread and length, then call out Half Dog, Full Dog, Cone, Oval, or Flat as the required point. Half Dog points register into shallow holes or slots when location matters under load.

For hard-to-find square-head requirements, Cold Headers can help confirm the size and point style before quote work begins. Review the selected point, wrench clearance, and mating feature before substitution. When the assembly cannot accept an exposed square head, compare headless socket set screw families before substituting.

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: 1/4-20 (UNC)
• Thread Fit: 2A (per ASME B18.6.2)
• Length: 2 3/4 in.
• Width Across Flats (F): 0.250 / 0.241 in. (max/min)
• Across Corners (G): 0.354 / 0.331 in. (max/min)
• Head Height (H): 0.196 / 0.178 in. (max/min)
• Dimensional Standard: ASME B18.6.2

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