
Unit:mm Unit:mm
| Major | Pitch Diameter | Minor | Major | Pitch Diameter | Minor |
| Diameter | Diameter | Diameter | Diameter |
Size Class Upper Lower Size Class Upper Lower
| Basic | Basic | Tolerance Tolerance | Basic | Basic | Basic | Tolerance Tolerance | Basic | |||||||
| Size | Size | ( μ m) | ( μ m) | Size | Size | Size | ( μ m) | ( μ m) | Size | |||||
| + | + | + | + | |||||||||||
| 1/8 W 40 | P1 | 3.175 | 2.768 | 25 | 10 | 2.362 | 1/16 SM 80 | P1 | 1.588 | 1.382 | 25 | 10 | 1.176 | |
| 5/32 | W 32 | P2 | 3.969 | 3.460 | 40 | 20 | 2.952 | 5/64 SM 64 | P1 | 1.984 | 1.726 | 25 | 10 | 1.468 |
| 3/16 W 24 | P2 | 4.762 | 4.085 | 40 | 20 | 3.407 | 3/32 SM 56 | P1 | 2.381 | 2.086 | 25 | 10 | 1.791 | |
| 7/32 W 24 | P2 | 5.556 | 4.879 | 40 | 20 | 4.201 | 3/32 SM 100 | P1 | 2.381 | 2.216 | 25 | 10 | 2.051 | |
| 1/4 W 20 | P2 | 6.350 | 5.537 | 40 | 20 | 4.724 | 1/8 SM 40 | P2 | 3.175 | 2.763 | 40 | 25 | 2.351 | |
| 5/16 W 18 | P2 | 7.938 | 7.034 | 40 | 20 | 6.130 | 1/8 SM 44 | P2 | 3.175 | 2.800 | 40 | 25 | 2.425 | |
| 3/8 W 16 | P2 | 9.525 | 8.509 | 40 | 20 | 7.493 | 9/64 SM 40 | P2 | 3.572 | 3.160 | 40 | 25 | 2.748 | |
| 7/16 W 14 | P3 | 11.112 | 9.950 | 60 | 40 | 8.788 | 11/64 SM 40 | P2 | 4.366 | 3.954 | 40 | 25 | 3.542 | |
| 1/2 W 12 | P3 | 12.700 11.345 | 60 | 40 | 9.990 | 3/16 SM 24 | P2 | 4.762 | 4.075 | 40 | 20 | 3.388 | ||
| 9/16 W 12 | P3 | 14.288 12.933 | 60 | 40 11.578 | 3/16 SM 28 | P2 | 4.762 | 4.173 | 40 | 20 | 3.584 | |||
| 5/8 W 11 | P3 | 15.875 14.396 | 60 | 40 12.917 | 3/16 SM 32 | P2 | 4.762 | 4.246 | 40 | 20 | 3.730 | |||
| 3/4 W 10 | P3 | 19.050 17.424 | 60 | 40 15.798 | 3/16 SM 40 | P2 | 4.762 | 4.350 | 40 | 25 | 3.938 | |||
| 7/8 W 9 | P3 | 22.225 20.418 | 60 | 40 18.611 | 7/32 SM 32 | P2 | 5.556 | 5.040 | 40 | 20 | 4.524 | |||
| 1 W 8 | P3 | 25.400 23.367 | 60 | 20 21.334 | 15/64 SM 28 | P2 | 5.953 | 5.364 | 40 | 20 | 4.775 | |||
| 1 1/8 | W 7 | P4 | 28.575 26.252 | 80 | 40 23.929 | 1/4 SM 24 | P2 | 6.350 | 5.663 | 40 | 20 | 4.976 | ||
| 1 1/4 | W 7 | P4 | 31.750 29.427 | 80 | 40 27.104 | 1/4 SM 40 | P1 | 6.350 | 5.938 | 25 | 10 | 5.526 | ||
| 1 3/8 | W 6 | P4 | 34.925 32.214 | 80 | 40 29.503 | |||||||||
| 1 1/2 | W 6 | P4 | 38.100 35.389 | 80 | 40 32.678 | |||||||||
| 1 5/8 | W 5 | P4 | 41.275 38.022 | 80 | 40 34.769 | |||||||||
| 1 3/4 | W 5 | P4 | 44.450 41.197 | 80 | 40 37.944 | |||||||||
| 1 7/8 | W 4 1/2 | P4 | 47.625 44.011 | 80 | 40 40.397 | |||||||||
| 2 W 4 1/2 | P4 | 50.800 47.186 | 80 | 40 43.572 |
Technical Inf