
Metric Threads (M, MF) Unit: mm
Major Minor Major Minor
Pitch Diameter Pitch Diameter
SP Kind diameter diameter Kind diameter diameter
Size of Class Upper Lower Size of Class Upper Lower
tap Basic Basic Tolerance Basic tap Basic Basic Tolerance Basic
Tolerance Tolerance Tolerance Tolerance
Size Size (μm) Size Size Size (μm) Size
| (μm) + | (μm) + | (μm) + | (μm) + | ||
| P1 | 20 0 20 | P2 | 40 20 20 | ||
| P2 | 40 20 20 | P3 | 60 40 20 |
| P3 | 60 40 20 | P4 | 80 60 20 |
| ISO1 | 29 10 19 | ISO1 | 35 12 23 |
| ISO2 | 48 29 19 | ISO2 | 59 35 24 |
| ISO2X | 63 44 19 | ISO2X | 79 55 24 |
PO M4.5×0.75 4.500 4.013 3.688 M6×1 6.000 5.350 4.917
| ISO3 | 67 48 19 | ISO3 | 83 59 24 | |
| G6 | 76 64 13 | G7 | 89 76 13 | |
| G7 | 89 76 13 | G8 | 102 89 13 | |
| G8 | 102 89 13 | G10 | 127 114 13 | |
| ST | ISO2X | 89 76 13 | ISO2X | 102 89 13 |
| ISO3X | 102 89 13 | ISO3X | 127 114 13 | |
| P1 | 25 10 15 | P2 | 40 20 20 | |
| P2 | 40 25 15 | P3 | 60 40 20 | |
| ROLL | P3 | 55 40 15 | P4 | 80 60 20 |
M4.5×0.5 4.500 4.175 3.959
| ISO1 | 24 8 16 | ISO1 | 32 11 21 |
| ISO2 | 40 24 16 | ISO2 | 53 32 21 |
| ISO3 | 56 40 16 | ISO3 | 74 53 21 |
M6×0.75 6.000 5.513 5.188
| CARBIDE | P1 | 20 0 20 | G5 | 64 | 51 | 13 |
| P2 | 40 20 20 | G6 | 76 | 64 | 12 | |
| P3 | 60 40 20 | G7 | 89 | 76 | 13 | |
| ISO1 | 30 10 20 | G8 | 102 | 89 | 13 | |
| ISO2 | 50 30 20 | ISO2X | 89 | 76 | 13 |
| M5×0.8 ISO2X 5.000 4.480 | 70 50 20 4.134 | ISO3X | 102 | 89 | 13 | |
| ISO3 | 70 50 20 | P1 | 25 10 15 | |||
| G7 | 89 76 13 | P2 | 40 25 15 | |||
| HAND | G8 | 102 89 13 | P3 | 55 40 15 | ||
| TAPS | ISO2X | 89 76 13 | ISO1 | 27 9 18 | ||
| ISO3X | 102 89 13 | ISO2 | 45 27 18 | |||
| P1 | 25 10 15 | M6×0.5 ISO3 | 6.000 5.675 63 45 18 5.459 | |||
| P2 | 40 25 15 | G5 | 64 | 51 | 13 | |
| EG (STI) | P3 | 55 40 15 | G6 | 76 | 64 | 12 |
| ISO1 | 24 8 16 | G7 | 89 | 76 | 13 | |
| ISO2 | 40 24 16 | ISO2X | 76 | 64 | 12 |
M5×0.5 5.000 4.675 4.459
| SPECIAL | ISO3 | 56 40 16 | 13 76 89 ISO3X | |
| THREADS, | G5 | 64 | 51 | 13 |
| GAUGES | G6 | 76 | 64 | 12 |
| ISO2X | 64 | 51 | 13 | |
| ISO3X | 76 | 64 | 12 | |
| THREAD | P1 | 25 10 15 | ||
| MILLS | P2 | 40 25 15 |
P3 55 40 15
M5.5×0.5 5.500 5.175 4.959
ISO1 24 8 16 ISO2 40 24 16
ISO3 56 40 16