M10×1.5 Thread Specifications
Complete dimensions for M10×1.5 coarse pitch thread per ISO 724. Pitch: 1.5mm (16.9 TPI equivalent).
Thread Dimensions
| Designation | M10×1.5 |
| Thread Series | ISO Metric Coarse |
| Pitch | 1.5 mm (16.9 TPI) |
| Major Diameter (d) | 10 mm (0.3937") |
| Pitch Diameter (d₂) | 9.0258 mm (0.3553") |
| Minor Diameter — External (d₁) | 8.1596 mm (0.3212") |
| Minor Diameter — Internal (D₁) | 8.3763 mm (0.3298") |
| Thread Depth | 0.8119 mm |
| Tensile Stress Area | 57.99 mm² |
| Fundamental Triangle Height (H) | 1.299 mm |
Tap Drill Size
Recommended tap drill: 8.5 mm
Calculated minor diameter (D₁): 8.38 mm. Closest standard metric drill: 8.5 mm.
Closest inch drill: 21/64" (0.3281" / 8.33 mm)
Proof Loads by Property Class
| Class | Proof Stress (MPa) | Tensile Strength (MPa) | Proof Load (kN) | Tensile Load (kN) |
|---|---|---|---|---|
| 4.6 | 225 | 400 | 13.0 | 23.2 |
| 4.8 | 310 | 420 | 18.0 | 24.4 |
| 5.8 | 380 | 520 | 22.0 | 30.2 |
| 8.8 | 580 | 800 | 33.6 | 46.4 |
| 9.8 | 650 | 900 | 37.7 | 52.2 |
| 10.9 | 830 | 1040 | 48.1 | 60.3 |
| 12.9 | 970 | 1220 | 56.3 | 70.7 |
Proof load = stress area × proof stress. Per ISO 898-1.
Related Thread Sizes
Common Applications
- General machinery
- Automotive components
- Structural brackets
- Equipment mounting
How M10×1.5 Dimensions Are Calculated
All dimensions on this page are calculated from ISO 724 formulas using the nominal diameter (10 mm) and pitch (1.5 mm):
- Fundamental triangle height: H = (√3/2) × P = 1.299 mm
- Pitch diameter: d₂ = d − 0.6495 × P = 9.0258 mm
- Minor diameter (external): d₁ = d − 1.2269 × P = 8.1596 mm
- Minor diameter (internal): D₁ = d − 1.0825 × P = 8.3763 mm
- Thread depth: 5H/8 = 0.8119 mm
- Tensile stress area: Aₛ = (π/4) × ((d₂ + d₃)/2)² = 57.99 mm²