END MILL PRICELIST EFFECTIVE 9/1/24

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TECHNICAL DATA
Taps & Dies

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Speeds For Inch Taps
Speeds For Metric Taps
Minor Diameters of Tap Holes
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Speeds For Inch Taps

Conversion Chart: Feet per minute (fpm) to Revolutions per minute (rpm)
Number
Size
Fractional
Size
Decimal
Size*
Feet per minute
5 10 15 20 25 30 35 40 50 60 70 80 90 100125 150175200
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
*Decimal Size Based on Nominal O.D.