Machinery's Handbook Pocket Companion

| Nominal Shaft Diameter | Parallel and Taper | Parallel | Taper | |||
|---|---|---|---|---|---|---|
| Square | Rectangular | Square | Rectangular | Square | Rectangular | |
| S | S | T | T | T | T | |
|
| 0.430 | 0.445 | 0.560 | 0.544 | 0.535 | 0.519 |
| | 0.493 | 0.509 | 0.623 | 0.607 | 0.598 | 0.582 |
| ? | 0.517 | 0.548 | 0.709 | 0.678 | 0.684 | 0.653 |
| | 0.581 | 0.612 | 0.773 | 0.742 | 0.748 | 0.717 |
|
| 0.644 | 0.676 | 0.837 | 0.806 | 0.812 | 0.781 |
| | 0.708 | 0.739 | 0.900 | 0.869 | 0.875 | 0.844 |
| ? | 0.771 | 0.802 | 0.964 | 0.932 | 0.939 | 0.907 |
| | 0.796 | 0.827 | 1.051 | 1.019 | 1.026 | 0.994 |
| 1 | 0.859 | 0.890 | 1.114 | 1.083 | 1.089 | 1.058 |
| | 0.923 | 0.954 | 1.178 | 1.146 | 1.153 | 1.121 |
| 1 ? | 0.986 | 1.017 | 1.241 | 1.210 | 1.216 | 1.185 |
| | 1.049 | 1.080 | 1.304 | 1.273 | 1.279 | 1.248 |
| 1 | 1.112 | 1.144 | 1.367 | 1.336 | 1.342 | 1.311 |
| | 1.137 | 1.169 | 1.455 | 1.424 | 1.430 | 1.399 |
| 1 ? | 1.201 | 1.232 | 1.518 | 1.487 | 1.493 | 1.462 |
| | 1.225 | 1.288 | 1.605 | 1.543 | 1.580 | 1.518 |
| 1 | 1.289 | 1.351 | 1.669 | 1.606 | 1.644 | 1.581 |
| | 1.352 | 1.415 | 1.732 | 1.670 | 1.707 | 1.645 |
| 1 ? | 1.416 | 1.478 | 1.796 | 1.733 | 1.771 | 1.708 |
| | 1.479 | 1.541 | 1.859 | 1.796 | 1.834 | 1.771 |
| 1 | 1.542 | 1.605 | 1.922 | 1.860 | 1.897 | 1.835 |
| | 1.527 | 1.590 | 2.032 | 1.970 | 2.007 | 1.945 |
| 1 ? | 1.591 | 1.654 | 2.096 | 2.034 | 2.071 | 2.009 |
| | 1.655 | 1.717 | 2.160 | 2.097 | 2.135 | 2.072 |
| 2 | 1.718 | 1.781 | 2.223 | 2.161 | 2.198 | 2.136 |
| | 1.782 | 1.844 | 2.287 | 2.224 | 2.262 | 2.199 |
| 2 ? | 1.845 | 1.908 | 2.350 | 2.288 | 2.325 | 2.263 |
| | 1.909 | 1.971 | 2.414 | 2.351 | 2.389 | 2.326 |
| 2 | 1.972 | 2.034 | 2.477 | 2.414 | 2.452 | 2.389 |
| | 1.957 | 2.051 | 2.587 | 2.493 | 2.562 | 2.468 |
| 2 ? | 2.021 |