EngiRef / Metric Bolt Specification
M6
M6 coarse-thread metric bolt: 1 mm pitch, 6 mm major diameter. Tensile stress area 20.1 mm² per ISO 898-1. Takes a 10 mm wrench. Free bolt specification table…
Specification
- Size
- M6
- Pitch (mm)
- 1
- Major diameter d (mm)
- 6
- Minor diameter d₃ (mm, external thread)
- 4.77
- Tensile stress area (mm²)
- 20.1
- Head height (mm)
- 4
- Head diameter (mm)
- 10
- Wrench size (mm)
- 10
Tensile stress area follows ISO 898-1, At = (π/4)(d − 0.9382p)². Verify against the current standard and the fastener manufacturer's data before safety-critical design.