1/2-13 x 5 1/2 is built for legacy machinery and industrial assemblies that still specify a square head set screw instead of a headless socket screw.

Typical applications include large adjustment stops, travel-limit hardware, and machine fixtures. Point choice is part of the order detail, with Half Dog, Full Dog, Cone, Oval, and Flat handled under this family. Flat points bear against a machined flat without intentional penetration into the mating surface.

Cold Headers keeps the record focused on usable engineering details so buyers can compare the callout against drawings and service notes. The family runs UNC coarse thread throughout, the traditional square-head series. Cone points are typically chosen for a spot-drilled seat when a more fixed location is desired.

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: 5 1/2 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.