Tolerances | Size: Out of Round/Square
Size Tolerances and Out-of-Round or
Out-of-Square Tolerances
| Specified Sizes, In. | Over Under | Out-of-Round or Out-of-Square, In. |
|---|---|---|
| To 5/16 incl. | .005 .005 | .008 |
| Over 5/16 to 7/16 incl. | .006 .006 | .009 |
| Over 7/16 to 5/8 incl. | .007 .007 | .010 |
| Over 5/8 to 7/8 incl. | .008 .008 | .012 |
| Over 7/8 to 1 incl. | .009 .009 | .013 |
| Over 1 to 11/8 incl. | .010 .010 | .015 |
| Over 11/8 to 1¼ incl. | .011 .011 | .016 |
| Over 1¼ to 13/8 incl. | .012 .012 | .018 |
| Over 13/8 to 1½ incl. | .014 .014 | .021 |
| Over 1½ to 2 incl. | 1/64 – 1/64 | .023 |
| Over 2 to 2½ incl. | 1/32 – 0 | .023 |
| Over 2½ to 3½ incl. | 3/64 – 0 | .035 |
| Over 3½ to 41/2 incl. | 1/16 – 0 | .046 |
| Over 4½ to 51/2 incl. | 5/64 – 0 | .058 |
| Over 5½ to 6½ incl. | 1/8 – 0 | .070 |
| Over 6½ to 81/4 incl. | 5/32 – 0 | .085 |
| Over 81/4 to 91/2 incl. | 3/16 – 0 | .100 |
| Over 9½ to 10 incl. | 1/4 – 0 | .120 |
Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same transverse cross section.
Out-of -square section is the difference in perpendicular distance between opposite faces, measured at the same transverse cross section.
Tolerances shown are based upon ASTM A29.Reference:AISI Steel Products Manual, Alloy, Carbon and HSLA Steels. March, 1986.