
unit: mm unit: mm
Major Minor Major Minor
Pitch Diameter Pitch Diameter
Diameter Diameter Diameter Diameter
Size Class Upper Lower Size Class Upper Lower
Tolerance Tolerance Tolerance Tolerance
Basic Size Basic Size Basic Size Basic Size Basic Size Basic Size
| (μm) | (μm) | (μm) | (μm) |
| + | + | + | + |
| 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 4.5 | P4 | 47.625 | 44.011 | 80 | 40 | 40.397 | |||||||
| 2 W 4.5 | P4 | 50.800 | 47.186 | 80 | 40 | 43.572 |