Below is a chart for reference on hot rolled bar tolerances.
| Specified Sizes (Rounds or Squares) | Over | Under | Out-of-Round or Square | Machining Allowance – Minimum Stock Removal* |
| To 5/16″ included | 0.005″ | 0.005″ | 0.008″ |
0.016″ |
| Over 5/16″ to 7/16″ included | 0.006″ | 0.006″ | 0.009“ | 0.016″ |
| Over 7/16 to 5/8″ included | 0.007″ | 0.007″ | 0.010“ | 0.016″ |
| Over 5/8″ to 7/8″ included | 0.008″ | 0.008″ | 0.012“ | 0.021″ |
| Over 7/8″ to 1″ included | 0.009″ | 0.009″ | 0.013“ | 0.023“ |
| Over 1″ to 1-1/8″ included | 0.010″ | 0.010″ | 0.015“ | 0.025“ |
| Over 1-1/8″ to 1-1/4″ included | 0.011″ | 0.011″ | 0.016“ | 0.028“ |
| Over 1-1/4″ to 1-3/8″ included | 0.012″ | 0.012″ | 0.018“ | 0.030“ |
| Over 1-3/8″ to 1-1/2″ included | 0.014″ | 0.014″ | 0.021“ | 0.033“ |
| Over 1-1/2″ to 2″ included | 1/64″ | 1/64″ | 0.023“ | 0.042“ |
| Over 2″ to 2-1/2″ included | 1/32″ | 0″ | 0.023“ | 0.052“ |
| Over 2-1/2″ to 3-1/2″ included | 3/64″ | 0″ | 0.035“ | 0.072“ |
| Over 3-1/2″ to 4-1/2″ included | 1/16″ | 0″ | 0.046“ | 0.090“ |
| Over 4-1/2″ to 5-1/2″ included | 5/64″ | 0″ | 0.058“ | 0.110“ |
| Over 5-1/2″ to 6-1/2″ included | 1/8″ | 0″ | 0.070“ | 0.125“ |
| Over 6-1/2″ to 8-1/4″ included | 5/32″ | 0″ | 0.085″ | 0.155“ |
| Over 8-1/4″ to 9-1/2″ included | 3/16″ | 0″ | 0.100“ | 0.203“ |
| Over 9-1/2″ to 10″ included | 1/4″ | 0″ | 0.120″ | 0.250“ |
*Double the amount shown for proper stock removal on diameter or cross section.
