1/2-13 x 3 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. Because point style changes the mating contact, buyers should specify Half Dog, Full Dog, Cone, Oval, or Flat with the size. External wrench access is useful when an internal socket recess would be hard to keep clear.
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. Point selection should reflect the shaft feature, acceptable marking, and expected service adjustment.
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: 1/2-13 (UNC)
- Thread Fit: 2A (per ASME B18.6.2)
- Length: 3 in.
- Width Across Flats (F): 0.500 / 0.484 in. (max/min)
- Across Corners (G): 0.707 / 0.665 in. (max/min)
- Head Height (H): 0.389 / 0.361 in. (max/min)
- Dimensional Standard: ASME B18.6.2
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
