
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) + | ||
| P1 | 25 10 15 | P1 | 25 10 15 | ||
| P2 | 40 25 15 | P2 | 40 25 15 |
M2.2×0.25 2.200 2.038 1.929 SL
| ISO1 | 18 6 12 | ISO1 | 21 7 14 |
| ISO2 | 30 18 12 | ISO2 | 36 21 15 |
M3×0.35 3.000 2.773 2.621
| P1 | 25 10 15 | G5 | 64 | 51 | 13 | |
| P2 | 40 25 15 | G6 | 76 | 64 | 12 | |
| P3 | 55 40 15 | ISO2X | 64 | 51 | 13 | PO |
M2.3×0.4 2.300 2.040 1.867
| ISO1 | 21 7 14 | ISO3X | 76 | 64 | 12 | |
| ISO2 | 36 21 15 | P1 | 25 10 15 | |||
| ISO2X | 51 36 15 | P2 | 40 25 15 | |||
| P1 | 25 10 15 | P3 | 55 40 15 | ST | ||
| P2 | 40 25 15 | P4 | 70 55 15 |
M2.3×0.25 2.300 2.138 2.029
| ISO1 | 18 6 12 | ISO1 | 27 9 18 | |
| ISO2 | 30 18 12 | ISO2 | 45 27 18 | |
| P1 | 25 10 15 | ISO2X | 60 42 18 | ROLL |
M3.5×0.6 3.500 3.110 2.850
| P2 | 40 25 15 | ISO3 | 63 45 18 |
| P3 | 55 40 15 | G5 | 64 51 13 |
| ISO1 | 23 8 15 | G6 | 76 64 12 |
| ISO2 | 38 23 15 | G7 | 89 76 13 |
M2.5×0.45 2.500 2.208 2.013 CARBIDE
| ISO2X | 53 38 15 | G8 | 102 89 13 |
| G5 | 64 51 13 | ISO2X | 89 76 13 |
| G7 | 89 76 13 | ISO3X | 102 89 13 |
| ISO2X | 64 51 13 | P1 | 25 10 15 |
ISO3X 89 76 13 P2 40 25 15
M3.5×0.35 3.500 3.273 3.121
| P1 | 25 10 15 | ISO1 | 21 7 14 |
| P2 | 40 25 15 | ISO2 | 36 21 15 |
M2.5×0.35 2.500 2.273 2.121
ISO1 20 7 13 P1 20 0 20
ISO2 34 20 14 P2 40 20 20
| P1 | 25 10 15 | P3 | 60 40 20 |
| P2 | 40 25 15 | ISO1 | 29 10 19 |
| P3 | 55 40 15 | ISO2 | 48 29 19 |
2.600
ISO1 23 8 15 ISO2X 63 44 19 EG (STI)
M4×0.7 4.000 3.545 3.242
ISO2 38 23 15 ISO3 67 48 19
M2.6×0.45 2.308 2.113
| ISO2X | 53 38 15 | G6 | 76 64 13 |
| G5 | 64 51 13 | G7 | 89 76 13 |
G7 89 76 13 G8 102 89 13 THREADS,
2.000
| ISO2X | 64 51 13 | ISO2X | 89 76 13 | GAUGES |
| ISO3X | 89 76 13 | ISO3X | 102 89 13 | |
| P1 | 25 10 15 | P1 | 25 10 15 | |
| P2 | 40 25 15 | P2 | 40 25 15 | THREAD |
M2.6×0.35 2.600 2.373 2.221
| ISO1 | 20 7 13 | P3 | 55 40 15 | MILLS |
| ISO2 | 34 20 14 | ISO1 | 24 8 16 | |
| P1 | 25 10 15 | ISO2 | 40 24 16 |
M4×0.5 4.000 3.675 3.459
| P2 | 40 25 15 | ISO3 | 56 40 16 | |||
| P3 | 55 40 15 | G5 | 64 | 51 | 13 | DIES |
| ISO1 | 24 8 16 | G6 | 76 | 64 | 12 | |
| ISO2 | 40 24 16 | ISO2X | 64 | 51 | 13 | |
| ISO2X | 55 39 16 | ISO3X | 76 | 64 | 12 |
M3×0.5 3.000 2.675 2.459 CENTER
ISO3 56 40 16
G5 64 51 13 G6 76 64 12 G7 89 76 13