| unitFmm | |||||||||
| Tolerance grade | Classification of standard dimensions | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| symbol | Explanation | 0.5 or more * 3 or less |
More than 3 6 or less |
More than 6 30 or less |
Over 30 120 or less |
Over 120 400 or less |
Over 400 1000 or less th> | Over 1000 2000 or less |
Over 2000 4000 or less |
| tolerance | |||||||||
| f | Fine grade | }0.05 | }0.05 | }0.1 | }0.15 | }0.2 | }0.3 | }0.5 | | |
| m | Intermediate | }0.1 | }0.1 | }0.2 | }0.3 | }0.5 | }0.8 | }1.2 | }2 |
| c | Coarse grade | }0.2 | }0.3 | }0.5 | }0.8 | }1.2 | }2 | }3 | }4 |
| v | Very coarse grade | | | }0.5 | }1 | }1.5 | }2.5 | }4 | }6 | }8 |
| * For standard dimensions less than 0.5 mm, allowances are individually indicated following the standard dimensions. | |||||||||
| Reference: "JIS Handbook Machine Element 2001", page 581, Table 1 Quoted from the tolerance for length dimensions excluding chamfered parts. | |||||||||