
| Size | Outside Curre | diameter nt JIS | of externa Old | l thread JIS | Bar dia | meter |
| Max. | Min. | Max. | Min. | Current JIS | Old JIS | |
| M70X2 | 69.962 | 69.682 | 69.940 | 69.640 | 69.8 | 69.7 |
| M70X1.5 | 69.968 | 69.732 | 69.950 | 69.700 | 69.79 | 69.76 |
| M72X6 | 71.920 | 71.320 | 71.920 | 71.320 | 71.5 | 71.5 |
| M72X4 | 71.940 | 71.465 | 71.940 | 71.465 | 71.6 | 71.6 |
| M72X3 | 71.952 | 71.577 | 71.952 | 71.577 | 71.7 | 71.7 |
| M72X2 | 71.962 | 71.682 | 71.940 | 71.640 | 71.8 | 71.7 |
| M72X1.5 | 71.968 | 71.732 | 71.950 | 71.700 | 71.79 | 71.76 |
| ※ 2 M75X6 | 74.920 | 74.320 | 74.920 | 74.320 | 74.5 | 74.5 |
| M75X4 | 74.940 | 74.465 | 74.940 | 74.465 | 74.6 | 74.6 |
| M75X3 | 74.952 | 74.577 | 74.952 | 74.577 | 74.7 | 74.7 |
| M75X2 | 74.962 | 74.682 | 74.940 | 74.640 | 74.8 | 74.7 |
| M75X1.5 | 74.968 | 74.732 | 74.950 | 74.700 | 74.79 | 74.76 |
| M76X6 | 75.920 | 75.320 | 75.920 | 75.320 | 75.5 | 75.5 |
| M76X4 | 75.940 | 75.465 | 75.940 | 75.465 | 75.6 | 75.6 |
| M76X3 | 75.952 | 75.577 | 75.952 | 75.577 | 75.7 | 75.7 |
| M76X2 | 75.962 | 75.682 | 75.962 | 75.682 | 75.8 | 75.8 |
| M76X1.5 | 75.968 | 75.732 | 75.968 | 75.732 | 75.79 | 75.79 |
| M78X2 | 77.962 | 77.682 | 77.940 | 77.640 | 77.8 | 77.7 |
| M80X6 | 79.920 | 79.320 | 79.920 | 79.320 | 79.5 | 79.5 |
| M80X4 | 79.940 | 79.465 | 79.940 | 79.465 | 79.6 | 79.6 |
| M80X3 | 79.952 | 79.577 | 79.952 | 79.577 | 79.7 | 79.7 |
| M80X2 M80X1.5 | 79.962 79.968 | 79.682 79.732 | 79.940 79.950 | 79.640 79.700 | 79.8 79.79 | 79.7 79.76 |
Current JIS: Tolerance class 6g (M1.6 or larger), 6h (M1.4 or smaller) Old JIS: Class 2
Technical Inf