Tool Steel Tolerances
Drill Rod | Square Bars | Rectangle Bars
| Drill Rod | ||
| Alloy(s) | Spec. Diameter, in. | Diameter Tol. (over(+)/under(-)) |
| A2, D2, H13, M2, O1, S7, W1 | Up to 0.124 | +/- 0.0003" |
| A2, D2, H13, M2, O1, S7, W1 | 0.125 to 0.499 | +/- 0.0005" |
| A2, D2, H13, M2, O1, S7, W1 | 0.500 to 3 | +/- 0.0010" |
| Round Bars | ||
| Alloy(s) | Spec. Diameter, in. | Height Tol. (over(+)/under(-)) |
| A2, D2, H13, S7 | Any | - 0/+.125" |
| Square Bars | ||
| Alloy(s) | Spec. Height, in. | Height Tol. (over(+)/under(-)) |
| 1018, A2, D2, O1 | Any | +/- 0.001" |
| Oversize - A2, D2, H13, O1 | Any | + 0.010 to +0.015 |
| Square Bars | |||
| Alloy(s) | Spec. Height, in. | Height Tol. (over(+)/under(-)) | |
| W1 | Cold Drawn | 1.000" to 0.750" (largest dim.) | +/- 0.0015" |
| W1 | Cold Drawn | 0.749" to 0.250" (largest dim.) | +/- 0.0010 |
| W1 | Cold Drawn | 0.124" and smaller | +/- 0.0005 |
| Rectangle Bars | |||||
| Alloy(s) | Spec. Thickness, in. | Thickness Tol. | Spec. Width, in. | Width Tol. | |
| 1018, A2, D2, O1 | Precision Ground | Any | +/- 0.001" | Any | +/- 0.005" |
| (All Oversize):H13, A2, D2, O1, S7 | Precision Ground | Any | + 0.010" to + 0.015" | Any | + 0.010" to + 0.015" |
| Spec. Length for alloys above, in. | Length Tol. | ||||
| 18" | + 0.125" to + 0.250" | ||||
| 24" | + 0.1875 to + 0.375" | ||||
| 36" | + 0.250" to + 0.500" | ||||
| 72" | + 0.250" to + 0.750" | ||||
| Rectangle Bars | ||||
| Alloy(s) | Size, in. | Standard Tol. (section) | Standard Tol. (length) | |
| W1 | Cold Drawn | 1.000" to 0.750" (largest dim.) | +/- 0.0015" | + 0.125", - 0" |
| W1 | Cold Drawn | 0.749" to 0.125" (largest dim.) | +/- 0.0010" | + 0.125", - 0" |
| W1 | Cold Drawn | 0.124" and smaller | +/- 0.0005" | + 0.125", - 0" |
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