METRICcoarse60° flank
M10 × 1.5 Thread Dimensions
M10 x 1.5 is a coarse pitch METRIC thread. Pitch is 1.5 mm, equivalent to 16.93 threads per inch. The recommended tap drill leaves roughly 75% thread engagement.
Nominal Ø10 mm
Pitch1.5 mm
Threads per inch16.93
Pitch Ø9.03 mm
Tap drill8.5 mm
Thread profile
millimetres unless stated- Designation
- M10 x 1.5
- Thread system
- METRIC
- Series
- coarse
- Flank angle
- 60°
- Major diameter
- 10 mm / 0.39"
- Pitch
- 1.5 mm
- Threads per inch
- 16.93
- Pitch diameter
- 9.03 mm
- Minor diameter (external)
- 8.16 mm
- Minor diameter (internal)
- 8.38 mm
- Thread depth
- 0.92 mm
- Recommended tap drill
- Ø 8.5 mm / 0.33"
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.