For drawings that call out a wrench-driven set screw, 3/8-16 x 3 identifies the coarse thread, length, material class, and square head geometry.

Typical applications include agricultural equipment with exposed mechanisms and field-adjusted stops. 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.

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. External wrench access is useful when an internal socket recess would be hard to keep clear.

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: 3/8-16 (UNC)
• Thread Fit: 2A (per ASME B18.6.2)
• Length: 3 in.
• Width Across Flats (F): 0.375 / 0.362 in. (max/min)
• Across Corners (G): 0.530 / 0.497 in. (max/min)
• Head Height (H): 0.293 / 0.270 in. (max/min)
• Dimensional Standard: ASME B18.6.2

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