EngiRef / UNC Bolt Specification
5/8-11
5/8-11 coarse UNC bolt: 11 threads per inch, 15.88 mm major diameter. Tensile stress area 146 mm² per ASME B1.1. Takes a 23.81 mm wrench. Free imperial…
Specification
- Size
- 5/8-11
- Threads per inch (TPI)
- 11
- Major diameter D (mm)
- 15.88
- Minor diameter D₁ (mm, internal thread)
- 13.39
- Tensile stress area (mm²)
- 146
- Wrench size (mm)
- 23.81
Tensile stress area follows ASME B1.1, At = 0.7854(D − 0.9743/n)² in², converted at 645.16 mm²/in². Verify against the current standard and the fastener manufacturer's data before safety-critical design.