For line-shaft hardware, collars, and similar mechanical locations, 1/2-13 x 1/2 gives buyers the square-head set screw style named on many older drawings.

Typical applications include older machine tools that were designed around wrench-driven set screws. The five-point structure lets the same square-head size serve locating, bearing, and seating requirements. Flat points bear against a machined flat without intentional penetration into the mating surface.

Cold Headers brings long socket and set screw experience to older machine platforms where square-head hardware is still specified. The family runs UNC coarse thread throughout, the traditional square-head series. Socket set screw families provide the internal-drive alternative where square-head projection or wrench swing will not 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: 1/2-13 (UNC)
• Thread Fit: 2A (per ASME B18.6.2)
• Length: 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.