When a threaded component must be seated with external wrench access, 3/8-16 x 1/2 provides the traditional square head set screw format.

Typical applications include construction machinery where large wrench flats are easier to clean and grip. Because point style changes the mating contact, buyers should specify Half Dog, Full Dog, Cone, Oval, or Flat with the size. Point selection should reflect the shaft feature, acceptable marking, and expected service adjustment.

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. The square head equals the nominal diameter across flats, giving the wrench size a direct relationship to the screw size.

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: 1/2 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.