METRICcoarse60° flank
M7 × 1 Thread Dimensions
M7 x 1 is a coarse pitch METRIC thread. Pitch is 1 mm, equivalent to 25.4 threads per inch. The recommended tap drill leaves roughly 75% thread engagement.
Nominal Ø7 mm
Pitch1 mm
Threads per inch25.4
Pitch Ø6.35 mm
Tap drill6 mm
Thread profile
millimetres unless stated- Designation
- M7 x 1
- Thread system
- METRIC
- Series
- coarse
- Flank angle
- 60°
- Major diameter
- 7 mm / 0.28"
- Pitch
- 1 mm
- Threads per inch
- 25.4
- Pitch diameter
- 6.35 mm
- Minor diameter (external)
- 5.77 mm
- Minor diameter (internal)
- 5.92 mm
- Thread depth
- 0.61 mm
- Recommended tap drill
- Ø 6 mm / 0.24"
How these values are derived
Basic ISO thread geometry uses the fundamental triangle height H = 0.866025 × P. External minor diameter d₃ = d − 1.226869 × P, internal minor diameter D₁ = d − 1.082532 × P. Tap drill is given as nominal diameter minus pitch, which approximates a 75% thread engagement — adjust for tough materials or deep holes.