5/16-18 x 5/8 is a square head set screw used where an open wrench or socket can access the head and point style must be specified at order.
Typical applications include couplings and collars in heavy service where point style is part of the assembly design. This family is ordered as one size across five point choices: Half Dog, Full Dog, Cone, Oval, and Flat. Point selection should reflect the shaft feature, acceptable marking, and expected service adjustment.
Cold Headers brings long socket and set screw experience to older machine platforms where square-head hardware is still specified. Review the selected point, wrench clearance, and mating feature before substitution. 316 stainless square-head versions can be reviewed as non-catalog quote requests when the application requires that material.
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: 5/16-18 (UNC)
- Thread Fit: 2A (per ASME B18.6.2)
- Length: 5/8 in.
- Width Across Flats (F): 0.312 / 0.302 in. (max/min)
- Across Corners (G): 0.442 / 0.415 in. (max/min)
- Head Height (H): 0.245 / 0.224 in. (max/min)
- Dimensional Standard: ASME B18.6.2
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
