
Metric Threads (M, MF) Unit: mm
Major Minor Major Minor
Pitch Diameter Pitch Diameter
Kind diameter diameter Kind diameter diameter SP
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) + | ||
| P2 | 40 20 20 | P2 | 40 20 20 | ||
| P3 | 60 40 20 | P3 | 60 40 20 |
| P4 | 80 60 20 | P4 | 80 60 20 | ||
| ISO1 | 35 12 23 | ISO1 | 32 11 21 | ||
| ISO2 | 59 35 24 | ISO2 | 53 32 21 | ||
| M7×1 ISO2X 7.000 6.350 | 79 55 24 5.917 | M8×0.75 ISO3 | 8.000 7.513 74 53 21 7.188 | ||
| ISO3 | 83 59 24 | G6 | 76 | 64 | PO 12 |
| G8 | 102 89 13 | G7 | 89 | 76 | 13 |
| G10 | 127 114 13 | G8 | 102 | 89 | 13 |
| ISO2X | 102 89 13 | ISO2X | 89 | 76 | 13 |
| ISO3X | 127 114 13 | ISO3X | 102 | 89 | ST 13 |
| P2 | 40 20 20 | P1 | 25 10 15 | ||
| P3 | 60 40 20 | P2 | 40 25 15 | ||
| P4 | 80 60 20 | P3 | 55 40 15 | ||
| M7×0.75 | 7.000 6.513 | M8×0.5 6.188 | 8.000 7.675 | 7.459 | |
| ISO1 | 32 11 21 | ISO1 | 27 9 18 | ROLL | |
| ISO2 | 53 32 21 | ISO2 | 45 27 18 | ||
| ISO3 | 74 53 21 | ISO3 | 63 45 18 | ||
| P1 | 25 10 15 | P2 | 40 20 20 | ||
| P2 | 40 25 15 | P3 | 60 40 20 |
P3 55 40 15 P4 80 60 20
M7×0.5 7.000 6.675 6.459
| ISO1 | 27 9 18 | ISO1 | 38 13 25 |
| ISO2 | 45 27 18 | ISO2 | 63 38 25 |
| ISO3 | 63 45 18 | ISO2X | 88 63 25 |
M9×1.25 9.000 8.188 7.647 LONG
| P2 | 40 20 20 | ISO3 | 88 63 25 |
| P3 | 60 40 20 | G7 | 89 76 13 |
| P4 | 80 60 20 | G9 | 114 102 12 |
| ISO1 | 38 13 25 | G10 | 127 114 13 |
ISO2 63 38 25 ISO2X 114 102 12
| M8×1.25 ISO2X 8.000 7.188 | 88 63 25 6.647 | ISO3X | 127 114 13 |
| ISO3 | 88 63 25 | P2 | 40 20 20 |
| G9 | 114 102 12 | P3 | 60 40 20 |
| G10 | 127 114 13 | P4 | EG (STI) 80 60 20 |
| ISO2X | 114 102 12 | ISO1 | 35 12 23 |
| ISO3X | 127 114 13 | ISO2 | 59 35 24 |
| P2 | 40 20 20 | M9×1 ISO2X 9.000 8.350 | 79 55 24 7.917 |
| P3 | 60 40 20 | ISO3 | 83 59 24 | THREADS, |
| P4 | 80 60 20 | G8 | 102 89 13 | GAUGES |
| ISO1 | 35 12 23 | G10 | 127 114 13 | |
| ISO2 | 59 35 24 | ISO2X | 102 89 13 | |
| ISO2X | 79 55 24 | ISO3X | 127 114 13 | THREAD |
M8×1 8.000 7.350 6.917
ISO3 83 59 24 MILLS
G7 89 76 13 G8 102 89 13 G10 127 114 13
ISO2X 102 89 13 DIES
ISO3X 127 114 13