1/4-20 x 2 1/4 is a case hardened low carbon steel square head set screw for machinery that uses wrench-driven adjustment or retention.

Typical applications include crusher and screen plants that use rugged retaining screws around shafts and collars. This family is ordered as one size across five point choices: Half Dog, Full Dog, Cone, Oval, and Flat. Half Dog points register into shallow holes or slots when location matters under load.

Cold Headers keeps the record focused on usable engineering details so buyers can compare the callout against drawings and service notes. Review the selected point, wrench clearance, and mating feature before substitution. Half Dog points register into shallow holes or slots when location matters under load.

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 1/4 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.