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Your Location: Home > Products > Taps > Cutting Speeds for Taps

Cutting Speeds for Taps

For cutting speeds on taps not listed, please contact an EMUGE Technical Representative at 800-323-3013.

UNC/UNF and NPT/NPTF
Tap Sizes Surface Feet per Minute
UNC
UNF		 NPT
NPTF		 5' 10' 15' 20' 25' 30' 40' 50' 60' 70' 80' 90' 100' 110' 120' 130' 140' 150'
Revolutions per Minute
No. 0   318 637 955 1273 1592 1910 2546 3183 3820 4456 5093 5729 6366 7003 7639 8276 8913 9549
No. 1   273 546 819 1046 1308 1570 2093 2617 3140 3663 4186 4710 5233 5756 6279 6805 7326 7849
No. 2   212 424 637 888 1110 1333 1777 2221 2665 3109 3554 3999 4442 4886 5330 5774 6218 6662
No. 3   191 382 573 772 964 1157 1543 1929 2315 2701 3086 3472 3858 4244 4629 5015 5401 5787
No. 4   174 347 521 682 853 1023 1364 1705 2046 2387 2728 3069 3411 3751 4092 4434 4775 5116
No. 5   147 294 441 611 764 917 1222 1528 1833 2139 2445 2750 3056 3361 3667 3973 4278 4584
No. 6   136 273 409 553 691 829 1106 1382 1659 1935 2212 2488 2766 3042 3318 3595 3871 4148
No. 8   119 239 358 466 583 699 932 1165 1398 1631 1864 2097 2330 2563 2796 3029 3262 3495
No. 10   101 201 302 402 502 603 804 1005 1205 1406 1607 1808 2009 2210 2411 2612 2813 3014
No. 12   87 174 260 354 442 531 707 884 1061 1238 1415 1592 1769 1945 2122 2300 2476 2653
1/4   76 153 229 306 382 458 611 764 917 1070 1222 1375 1528 1681 1833 1968 2139 2292
5/16   62 123 185 245 306 367 489 611 733 856 978 1100 1222 1345 1467 1589 1711 1833
3/8   50 101 151 204 255 305 407 509 611 713 815 917 1019 1120 1222 1324 1426 1528
7/16 1/8 43 87 130 175 219 262 349 437 524 611 698 786 873 960 1048 1135 1222 1310
1/2 - 38 76 115 153 191 229 305 382 458 535 611 688 764 840 917 993 1070 1146
9/16 1/4 34 68 102 137 172 206 274 342 410 478 547 616 683 752 820 888 952 1020
5/8 - 32 64 96 122 153 183 244 306 367 428 489 550 611 672 733 794 856 917
11/16 3/8 28 55 83 111 138 167 222 278 333 389 444 500 556 611 667 722 778 833
3/4 - 25 51 76 102 128 153 203 255 305 357 407 458 509 560 611 662 713 764
7/8 1/2 22 43 65 87 109 131 175 218 262 306 350 392 437 480 524 568 611 655
1 - 19 38 57 76 96 115 153 191 230 268 305 344 382 420 458 497 535 573
1 1/8 3/4 17 34 51 68 84 102 136 170 204 238 272 306 340 373 407 441 475 509
1 1/4 - 15 31 46 61 76 92 122 153 183 214 244 275 305 336 367 397 428 458
1 3/8 1 14 28 42 56 69 83 111 139 167 194 222 250 278 306 333 361 389 417
1 1/2 - 13 25 38 51 63 76 102 127 153 178 204 229 255 280 305 331 356 382
1 5/8   12 23 35 47 59 71 94 118 141 165 188 212 235 259 282 306 329 353
1 3/4   11 22 33 44 55 65 87 109 131 153 175 196 218 240 262 284 306 327
1 7/8   10 20 30 41 51 61 81 102 122 143 163 183 204 224 244 265 285 306
2   9 19 29 38 48 57 76 96 115 134 153 172 191 210 229 248 267 287

Metric Taps
  Surface Feet per Minute
  5' 10' 15' 20' 25' 30' 40' 50' 60' 70' 80' 90' 100' 110' 120' 130' 140' 150'
Tap Sizes Revolutions per Minute
M 1.0 490 979 1469 1959 2449 2938 3918 4897 5877 6856 7836 8815 9795 10774 11754 12733 13713 14692
M 2.0 242 484 725 967 1209 1451 1934 2418 2901 3385 3868 4352 4835 5319 5803 6286 6770 7253
M 3.0 162 324 486 647 809 971 1295 1619 1942 2266 2590 2914 3237 3561 3885 4208 4532 4856
M 3.5 138 277 415 554 692 830 1107 1384 1661 1938 2214 2491 2768 3045 3322 3599 3875 4152
M 4.0 122 243 365 487 608 730 973 1217 1460 1703 1946 2190 2433 2676 2920 3163 3406 3650
M 5.0 97 194 291 388 485 582 776 970 1163 1357 1551 1745 1939 2133 2327 2521 2715 2909
M 6.0 81 162 243 324 405 486 647 809 971 1133 1295 1457 1619 1781 1942 2104 2266 2428
M 7.0 69 138 208 277 346 415 554 692 830 969 1107 1246 1384 1522 1661 1799 1938 2076
M 8.0 61 121 182 243 303 364 485 606 728 849 970 1091 1213 1334 1455 1577 1698 1819
M 10.0 48 97 145 194 242 291 388 485 582 679 776 873 970 1067 1163 1260 1357 1454
M 12.0 40 81 121 162 202 243 324 405 486 567 647 728 809 890 971 1052 1133 1214
M 14.0 35 69 104 139 173 208 277 347 416 485 555 624 693 763 832 901 971 1040
M 16.0 30 61 91 121 152 182 243 303 364 424 485 546 606 667 728 788 849 910
M 18.0 27 54 81 108 135 162 216 269 323 377 431 485 539 593 547 700 754 808
M 20.0 24 49 73 97 121 146 194 243 291 340 388 437 485 534 582 631 680 728
M 22.0 22 44 66 88 110 132 176 221 265 309 353 397 441 485 529 573 618 662
M 24.0 20 40 61 81 101 121 162 202 243 283 323 364 404 445 485 526 566 606
M 27.0 18 36 54 72 90 108 144 180 216 252 287 323 359 395 431 467 503 539
M 30.0 16 32 49 65 81 97 129 162 194 226 259 291 323 356 388 420 453 485

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