| Number Size |
Fractional Size |
Decimal Size* |
Feet per minute | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 125 | 150 | 175 | 200 | |||
| 0 | - | .060 | 318 | 635 | 955 | 1275 | 1590 | 1910 | 2230 | 2550 | 3180 | 3820 | 4460 | 5100 | 5750 | 6350 | 7950 | 9550 | 11100 | 12700 |
| 1 | - | .073 | 262 | 525 | 785 | 1050 | 1310 | 1570 | 1830 | 2090 | 2620 | 3140 | 3550 | 4190 | 4710 | 5250 | 6550 | 7850 | 9150 | 10500 |
| 2 | - | .086 | 222 | 444 | 665 | 890 | 1110 | 1330 | 1550 | 1780 | 2220 | 2660 | 3110 | 3550 | 4000 | 4440 | 5550 | 6650 | 7750 | 8900 |
| 3 | - | .099 | 193 | 386 | 580 | 770 | 965 | 1160 | 1350 | 1540 | 1930 | 2310 | 2700 | 3090 | 3470 | 3860 | 4820 | 5800 | 6800 | 7700 |
| 4 | - | .112 | 170 | 341 | 510 | 680 | 855 | 1020 | 1190 | 1360 | 1700 | 2050 | 2390 | 2730 | 3070 | 3410 | 4260 | 5110 | 5950 | 6800 |
| 5 | 1/8 | .125 | 153 | 306 | 458 | 610 | 765 | 915 | 1070 | 1220 | 1530 | 1830 | 2140 | 2440 | 2750 | 3060 | 3820 | 4580 | 5350 | 6100 |
| 6 | - | .138 | 138 | 277 | 415 | 555 | 690 | 830 | 965 | 1110 | 1380 | 1660 | 1940 | 2210 | 2490 | 2770 | 3460 | 4150 | 4840 | 5550 |
| 8 | - | .164 | 116 | 233 | 350 | 466 | 580 | 700 | 815 | 930 | 1160 | 1400 | 1630 | 1860 | 2100 | 2330 | 2910 | 3490 | 4080 | 4660 |
| 10 | - | .190 | 100 | 201 | 302 | 402 | 500 | 605 | 705 | 805 | 1000 | 1210 | 1410 | 1610 | 1810 | 2010 | 2510 | 3020 | 3520 | 4020 |
| 12 | - | .216 | 88 | 177 | 265 | 354 | 442 | 530 | 620 | 710 | 885 | 1060 | 1240 | 1410 | 1590 | 1770 | 2210 | 2650 | 3090 | 3540 |
| 14 | - | .242 | 79 | 158 | 237 | 316 | 394 | 474 | 550 | 630 | 790 | 945 | 1100 | 1260 | 1420 | 1580 | 1970 | 2370 | 2760 | 3160 |
| - | 1/4 | .250 | 76 | 153 | 229 | 306 | 382 | 458 | 535 | 610 | 765 | 915 | 1070 | 1220 | 1370 | 1530 | 1910 | 2290 | 2670 | 3060 |
| - | 5/16 | .312 | 61 | 122 | 183 | 244 | 306 | 367 | 428 | 489 | 610 | 735 | 855 | 980 | 1100 | 1220 | 1530 | 1830 | 2140 | 2440 |
| - | 3/8 | .375 | 51 | 102 | 153 | 204 | 255 | 306 | 356 | 407 | 510 | 610 | 715 | 815 | 915 | 1020 | 1270 | 1530 | 1780 | 2040 |
| - | 7/16 | .437 | 43 | 87 | 131 | 175 | 218 | 262 | 306 | 349 | 436 | 525 | 610 | 700 | 785 | 875 | 1090 | 1310 | 1530 | 1750 |
| - | 1/2 | .500 | 38 | 76 | 114 | 153 | 191 | 229 | 267 | 306 | 382 | 458 | 535 | 610 | 690 | 765 | 955 | 1150 | 1340 | 1530 |
| - | 5/8 | .625 | 31 | 61 | 92 | 122 | 153 | 183 | 214 | 244 | 306 | 367 | 428 | 489 | 550 | 611 | 765 | 917 | 1070 | 1220 |
| - | 3/4 | .750 | 25 | 51 | 76 | 102 | 127 | 153 | 178 | 204 | 255 | 306 | 356 | 407 | 458 | 510 | 635 | 765 | 890 | 1020 |
| - | 7/8 | .875 | 22 | 44 | 65 | 87 | 109 | 131 | 153 | 175 | 218 | 262 | 306 | 349 | 393 | 436 | 545 | 655 | 765 | 875 |
| - | 1 | 1.000 | 19 | 38 | 57 | 76 | 95 | 114 | 134 | 153 | 191 | 229 | 267 | 306 | 344 | 382 | 477 | 575 | 670 | 765 |
