Page 541 - YG 2019

TECHNICAL TECHNICAL

DATA DATA

Threads Per Inch Minor Diameter Tap Drill Diameter (Cutting Tap) 16 TAP DRILL SIZES - METRIC THREAD
Size Min. Max. Max. 80% 75% 70% 65% 60%
UNC UNF UNEF UN 2B&3B 2B 3B Thread Thread Thread Thread Thread
Pitch Minor dia. Tap Drill Diameter
- - - 8 1.5520 1.5770 1.5672 1.5576 1.5657 1.5738 1.5820 1.5901 Size Min. Max. 80% Thread 75% Thread 70% Thread 65% Thread 60% Thread
- - - 12 1.5970 1.6150 1.6073 1.6009 1.6063 1.6117 1.6171 1.6226 M MF 6H 6H mm Inch mm Inch mm Inch mm Inch mm Inch
1-11/16 - - - 16 1.6200 1.6340 1.6283 1.6226 1.6266 1.6307 1.6347 1.6388
- - 18 - 1.6270 1.6400 1.6355 1.6298 1.6334 1.6370 1.6406 1.6442 M1 0.25 – .729 .798 0.74 .0291 0.76 .0298 0.77 .0304 0.79 .0311 0.81 .0317
- - - 20 1.6330 1.6450 1.6412 1.6355 1.6388 1.6420 1.6453 1.6485 – 0.2 .783 .841 0.79 .0312 0.81 .0317 0.82 .0322 0.83 .0327 0.84 .0332
5 - - - 1.5340 1.5680 1.5575 1.5422 1.5552 1.5681 1.5811 1.5941 M1.1 0.25 – .829 .898 0.84 .0331 0.86 .0337 0.87 .0344 0.89 .0350 0.91 .0356
- - - 6 1.5700 1.6000 1.5896 1.5768 1.5876 1.5985 1.6093 1.6201 – 0.2 .883 .941 0.89 .0351 0.91 .0356 0.92 .0361 0.93 .0367 0.94 .0372
- - - 8 1.6150 1.6400 1.6297 1.6201 1.6282 1.6363 1.6445 1.6526 M1.2 0.25 – .929 .998 0.94 .0370 0.96 .0377 0.97 .0383 0.99 .0389 1.01 .0396
1-3/4 – 0.2 .983 1.041 0.99 .0391 1.01 .0396 1.02 .0401 1.03 .0406 1.04 .0411
- - - 12 1.6600 1.6780 1.6698 1.6634 1.6688 1.6742 1.6796 1.6851
- - - 16 1.6820 1.6960 1.6908 1.6851 1.6891 1.6932 1.6972 1.7013 M1.4 0.3 – 1.075 1.159 1.09 .0428 1.11 .0436 1.13 .0444 1.15 .0451 1.17 .0459
- - - 20 1.6960 1.7070 1.7037 1.6980 1.7013 1.7045 1.7078 1.7110 – 0.2 1.183 1.241 1.19 .0469 1.21 .0474 1.22 .0480 1.23 .0485 1.24 .0490
- - - 6 1.6320 1.6630 1.6521 1.6393 1.6501 1.6610 1.6718 1.6826 M1.6 0.35 – 1.221 1.321 1.24 .0487 1.26 .0496 1.28 .0505 1.30 .0514 1.33 .0523
- - - 8 1.6770 1.7020 1.6922 1.6826 1.6907 1.6988 1.7070 1.7151 – 0.2 1.383 1.441 1.39 .0548 1.41 .0553 1.42 .0558 1.43 .0563 1.44 .0569
1-13/16 - - - 12 1.7220 1.7400 1.7323 1.7259 1.7313 1.7367 1.7421 1.7476 0.35 – 1.321 1.421 1.34 .0526 1.36 .0535 1.38 .0544 1.40 .0553 1.43 .0562
- - - 16 1.7450 1.7590 1.7533 1.7476 1.7516 1.7557 1.7597 1.7638 M1.7 – 0.3 1.375 1.459 1.39 .0547 1.41 .0554 1.43 .0562 1.45 .0570 1.47 .0577
- - - 20 1.7580 1.7700 1.7662 1.7605 1.7638 1.7670 1.7703 1.7735 – 0.25 1.429 1.498 1.44 .0567 1.46 .0573 1.47 .0580 1.49 .0586 1.51 .0593
- - - 6 1.6950 1.7250 1.7146 1.7018 1.7126 1.7235 1.7343 1.7451 – 0.2 1.483 1.541 1.49 .0587 1.51 .0593 1.52 .0598 1.53 .0603 1.54 .0608
- - - 8 1.7400 1.7650 1.7547 1.7451 1.7532 1.7613 1.7695 1.7776 M1.8 0.35 – 1.421 1.521 1.44 .0565 1.46 .0574 1.48 .0583 1.50 .0592 1.53 .0601
1-7/8 - - - 12 1.7850 1.8030 1.7948 1.7884 1.7938 1.7992 1.8046 1.8101 – 0.2 1.583 1.641 1.59 .0627 1.61 .0632 1.62 .0637 1.63 .0642 1.64 .0647
- - - 16 1.8070 1.8210 1.8158 1.8101 1.8141 1.8182 1.8222 1.8263 M2 0.4 – 1.567 1.679 1.58 .0624 1.61 .0634 1.64 .0644 1.66 .0654 1.69 .0665
- - - 20 1.8210 1.8320 1.8287 1.8230 1.8263 1.8295 1.8328 1.8360 – 0.25 1.729 1.798 1.74 .0685 1.76 .0692 1.77 .0698 1.79 .0704 1.81 .0711
- - - 6 1.7570 1.7880 1.7771 1.7643 1.7751 1.7860 1.7968 1.8076 M2.2 0.45 – 1.713 1.838 1.73 .0682 1.76 .0694 1.79 .0705 1.82 .0717 1.85 .0728
- - - 8 1.8020 1.8270 1.8172 1.8076 1.8157 1.8238 1.8320 1.8401 – 0.25 1.929 1.998 1.94 .0764 1.96 .0770 1.97 .0777 1.99 .0783 2.01 .0789
1-15/16 - - - 12 1.8470 1.8650 1.8573 1.8509 1.8563 1.8617 1.8671 1.8726 0.4 – 1.867 1.979 1.88 .0742 1.91 .0752 1.94 .0762 1.96 .0773 1.99 .0783
- - - 16 1.8700 1.8840 1.8783 1.8726 1.8766 1.8807 1.8847 1.8888 M2.3 – 0.35 1.921 2.021 1.94 .0762 1.96 .0771 1.98 .0780 2.00 .0789 2.03 .0798
- - - 20 1.8830 1.8950 1.8912 1.8855 1.8888 1.8920 1.8953 1.8985 – 0.25 2.029 2.098 2.04 .0803 2.06 .0810 2.07 .0816 2.09 .0822 2.11 .0829
4 1/2 - - - 1.7590 1.7950 1.7861 1.7691 1.7835 1.7979 1.8124 1.8268 M2.5 0.45 – 2.013 2.138 2.03 .0800 2.06 .0812 2.09 .0823 2.12 .0835 2.15 .0846
- - - 6 1.8200 1.8500 1.8396 1.8268 1.8376 1.8485 1.8593 1.8701 – 0.35 2.121 2.221 2.14 .0841 2.16 .0850 2.18 .0859 2.20 .0868 2.23 .0877
- - - 8 1.8650 1.8900 1.8797 1.8701 1.8782 1.8863 1.8945 1.9026 0.45 – 2.113 2.238 2.13 .0840 2.16 .0851 2.19 .0863 2.22 .0874 2.25 .0886
2 M2.6
- - - 12 1.9100 1.9280 1.9198 1.9134 1.9188 1.9242 1.9296 1.9351 – 0.35 2.221 2.321 2.24 .0880 2.26 .0889 2.28 .0898 2.30 .0907 2.33 .0916
- - - 16 1.9320 1.9460 1.9408 1.9351 1.9391 1.9432 1.9472 1.9513 M3 0.5 – 2.459 2.599 2.48 .0977 2.51 .0989 2.55 .1002 2.58 .1015 2.61 .1028
- - - 20 1.9460 1.9570 1.9537 1.9480 1.9513 1.9545 1.9578 1.9610 – 0.35 2.621 2.721 2.64 .1038 2.66 .1047 2.68 .1056 2.70 .1065 2.73 .1074
- - - 6 1.9450 1.9750 1.9646 1.9518 1.9626 1.9735 1.9843 1.9951 M3.5 0.6 – 2.850 3.010 2.88 .1132 2.92 .1148 2.95 .1163 2.99 .1178 3.03 .1194
- - - 8 1.9900 2.0150 2.0047 1.9951 2.0032 2.0113 2.0195 2.0276 – 0.35 3.121 3.221 3.14 .1235 3.16 .1244 3.18 .1253 3.20 .1262 3.23 .1271
2-1/8 - - - 12 2.0350 2.0530 2.0448 2.0384 2.0438 2.0492 2.0546 2.0601 M4 0.7 – 3.242 3.422 3.27 .1288 3.32 .1306 3.36 .1324 3.41 .1342 3.45 .1360
- - - 16 2.0570 2.0710 2.0658 2.0601 2.0641 2.0682 2.0722 2.0763 – 0.5 3.459 3.599 3.48 .1370 3.51 .1383 3.55 .1396 3.58 .1409 3.61 .1421
- - - 20 2.0710 2.0820 2.0787 2.0730 2.0763 2.0795 2.0828 2.0860 M4.5 0.75 – 3.688 3.878 3.72 .1465 3.77 .1484 3.82 .1503 3.87 .1522 3.92 .1542
4 1/2 - - - 2.0090 2.0450 2.0361 2.0191 2.0335 2.0479 2.0624 2.0768 – 0.5 3.959 4.099 3.98 .1567 4.01 .1580 4.05 .1593 4.08 .1605 4.11 .1618
- - - 6 2.0700 2.1000 2.0896 2.0768 2.0876 2.0985 2.1093 2.1201 0.9 – 4.026 4.226 4.06 .1600 4.12 .1623 4.18 .1646 4.24 .1669 4.30 .1692
- - - 8 2.1150 2.1400 2.1297 2.1201 2.1282 2.1363 2.1445 2.1526 M5 0.8 – 4.134 4.334 4.17 .1641 4.22 .1662 4.27 .1682 4.32 .1703 4.38 .1723
2-1/4
- - - 12 2.1600 2.1780 2.1698 2.1634 2.1688 2.1742 2.1796 2.1851 – 0.5 4.459 4.599 4.48 .1764 4.51 .1777 4.55 .1790 4.58 .1802 4.61 .1815
- - - 16 2.1820 2.1960 2.1908 2.1851 2.1891 2.1932 2.1972 2.2013 – 0.9 4.526 4.726 4.56 .1797 4.62 .1820 4.68 .1843 4.74 .1866 4.80 .1889
- - - 20 2.1960 2.2070 2.2037 2.1980 2.2013 2.2045 2.2078 2.2110 M5.5 – 0.75 4.688 4.878 4.72 .1858 4.77 .1878 4.82 .1897 4.87 .1916 4.92 .1935
- - - 6 2.1950 2.2260 2.2146 2.2018 2.2126 2.2235 2.2343 2.2451 – 0.5 4.959 5.099 4.98 .1961 5.01 .1974 5.05 .1986 5.08 .1999 5.11 .2012
- - - 8 2.2400 2.2650 2.2547 2.2451 2.2532 2.2613 2.2695 2.2776 1 – 4.917 5.153 4.96 .1953 5.03 .1979 5.09 .2004 5.16 .2030 5.22 .2055
2-3/8 - - - 12 2.2850 2.3030 2.2948 2.2884 2.2938 2.2992 2.3046 2.3101 M6 – 0.75 5.188 5.378 5.22 .2055 5.27 .2075 5.32 .2094 5.37 .2113 5.42 .2132
- - - 16 2.3070 2.3210 2.3158 2.3101 2.3141 2.3182 2.3222 2.3263 – 0.5 5.459 5.599 5.48 .2158 5.51 .2170 5.55 .2183 5.58 .2196 5.61 .2209
- - - 20 2.3210 2.3320 2.3287 2.3230 2.3263 2.3295 2.3328 2.3360 1 – 5.917 6.153 5.96 .2347 6.03 .2372 6.09 .2398 6.16 .2423 6.22 .2449
4 - - - 2.2290 2.2670 2.2594 2.2402 2.2564 2.2727 2.2889 2.3052 M7 – 0.75 6.188 6.378 6.22 .2449 6.27 .2468 6.32 .2487 6.37 .2507 6.42 .2526
- - - 6 2.3200 2.3500 2.3396 2.3268 2.3376 2.3485 2.3593 2.3701 – 0.5 6.459 6.599 6.48 .2551 6.51 .2564 6.55 .2577 6.58 .2590 6.61 .2602
- - - 8 2.3650 2.3900 2.3797 2.3701 2.3782 2.3863 2.3945 2.4026 1.25 – 6.647 6.912 6.70 .2638 6.78 .2670 6.86 .2702 6.94 .2734 7.03 .2766
2-1/2
- - - 12 2.4100 2.4280 2.4198 2.4134 2.4188 2.4242 2.4296 2.4351 – 1 6.917 7.153 6.96 .2740 7.03 .2766 7.09 .2792 7.16 .2817 7.22 .2843
- - - 16 2.4320 2.4460 2.4408 2.4351 2.4391 2.4432 2.4472 2.4513 M8 – 0.75 7.188 7.378 7.22 .2843 7.27 .2862 7.32 .2881 7.37 .2900 7.42 .2919
- - - 20 2.4460 2.4570 2.4537 2.4480 2.4513 2.4545 2.4578 2.4610 – 0.5 7.459 7.599 7.48 .2945 7.51 .2958 7.55 .2971 7.58 .2983 7.61 .2996
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