INCH KEYS AND KEYSEATS Machinery's Handbook, 31st Edition
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Table 2. Depth Control Values S and T for Shaft and Hub ANSI/ASME B17.1-1967 (R2013) Table 2. (Continued) Depth Control Values S and T for Shaft and Hub
Shafts, Parallel and Taper
Hubs, Parallel
Hubs, Taper
Nominal Shaft Diameter
Square
Rectangular
Square
Rectangular
Square
Rectangular
S
S
T
T
T
T
2.211 2.275 2.338 2.402 2.387 2.450 2.514 2.577 2.641 2.704 2.768 2.831 2.816 2.880 2.943 3.007 3.070 3.134 3.197 3.261 3.246 3.309 3.373 3.436 3.627 3.690 3.817 3.880 3.944 4.041 4.169 4.232
2.305 2.369 2.432 2.495 2.512 2.575 2.639 2.702 2.766 2.829 2.893 2.956 2.941 3.005 3.068 3.132 3.195 3.259 3.322 3.386 3.371 3.434 3.498 3.561 3.752 3.815 3.942 4.005 4.069 4.229 4.356 4.422
2.841 2.905 2.968 3.032 3.142 3.205 3.269 3.332 3.396 3.459 3.523 3.586 3.696 3.760 3.823 3.887 3.950 4.014 4.077 4.141 4.251 4.314 4.378 4.441 4.632 4.695 4.822 4.885 4.949 5.296 5.424 5.487
2.748 2.811 2.874 2.938 3.017 3.080 3.144 3.207 3.271 3.334 3.398 3.461 3.571 3.635 3.698 3.762 3.825 3.889 3.952 4.016 4.126 4.189 4.253 4.316 4.507 4.570 4.697 4.760 4.824 5.109 5.236 5.300
2.816 2.880 2.943 3.007 3.117 3.180 3.244 3.307 3.371 3.434 3.498 3.561 3.671 3.735 3.798 3.862 3.925 3.989 4.052 4.116 4.226 4.289 4.353 4.416 4.607 4.670 4.797 4.860 4.924 5.271 5.399 5.462
2.723 2.786 2.849 2.913 2.992 3.055 3.119 3.182 3.246 3.309 3.373 3.436 3.546 3.610 3.673 3.737 3.800 3.864 3.927 3.991 4.101 4.164 4.228 4.291 4.482 4.545 4.672 4.735 4.799 5.084 5.211 5.275
2 9 ∕ 16 2 5 ∕ 8 2 11 ∕ 16
2 3 ∕ 4
2 13 ∕ 16
2 7 ∕ 8
2 15 ∕ 16 3 1 ∕ 16 3 1 ∕ 8 3 3 ∕ 16 3 1 ∕ 4 3 3 5 ∕ 16 3 3 ∕ 8 3 7 ∕ 16 3 1 ∕ 2 3 9 ∕ 16 3 5 ∕ 8 3 11 ∕ 16
3 3 ∕ 4
3 13 ∕ 16
3 7 ∕ 8
3 15 ∕ 16 4 3 ∕ 16 4 1 ∕ 4 4 3 ∕ 8 4 7 ∕ 16 4 1 ∕ 2 4 3 ∕ 4 4 7 ∕ 8 4 15 ∕ 16 5 3 ∕ 16 5 1 ∕ 4 5 7 ∕ 16 5 1 ∕ 2 5 3 ∕ 4 5 15 ∕ 16 4 5
4.296 4.486 4.550 4.740 4.803 4.900 5.091 5.155 5.409 5.662 5.760 6.014 6.268 6.521 6.619 6.873 7.887 8.591 9.606 10.309 11.325 12.028 13.043
4.483 4.674 4.737 4.927 4.991 5.150 5.341 5.405 5.659 5.912 a 5.885 a 6.139 a 6.393 a 6.646 6.869 7.123 8.137 8.966 9.981 10.809 11.825 12.528 13.543
5.551 5.741 5.805 5.995 6.058 6.405 6.596 6.660 6.914 7.167 7.515 7.769 8.023 8.276 8.624 8.878 9.892 11.096 12.111 13.314 14.330 15.533 16.548
5.363 5.554 5.617 5.807 5.871 6.155 6.346 6.410 6.664 6.917 a 7.390 a 7.644 a 7.898 a 8.151 8.374 8.628 9.642 10.721 11.736 12.814 13.830 15.033 16.048
5.526 5.716 5.780 5.970 6.033 6.380 6.571 6.635 6.889 7.142 7.490 7.744 7.998 8.251 8.599 8.853 9.867 11.071 12.086 13.289 14.305 15.508 16.523
5.338 5.529 5.592 5.782 5.846 6.130 6.321 6.385 6.639 6.892 a 7.365 a 7.619 a 7.873 a 8.126 8.349 8.603 9.617 10.696 11.711 12.789 13.805 15.008 16.023
6
6 1 ∕ 4 6 1 ∕ 2 6 3 ∕ 4 7 1 ∕ 4 7 1 ∕ 2 7 3 ∕ 4 7
8 9
10 11 12 13 14 15
a 1¾ × 1½ inch key. All dimensions are given in inches. See Table 4 for tolerances.
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