Threading Technology – Clamping Technology 520

159 Machine Taps UNC UNF UNEF UN-8 M MF NPSF Rp (BSPP) G NPT NPTF Rc (BSPT) STI SELF-LOCK Accessories NPSM/NPSC Tech. Info v c Product Finder The tap drill sizes shown are reference values and may have to be altered to meet specific tapping requirements. EMUGE shall have no liability or responsibility of any kind resulting from the selection of a tap drill size from this chart. Values printed are correct at the time of printing and subject to change without notice. 1.17 Decimal equivalents for tap drill selection Inch-Wire [mm] Decimal Inch 0.1 mm 0.0039 0.2 mm 0.0079 0.3 mm 0.0118 80 0.0135 79 0.0145 1/64 0.0156 0.4 mm 0.0157 78 0.0160 77 0.0180 0.5 mm 0.0197 76 0.0200 75 0.0210 74 0.0225 0.6 mm 0.0236 73 0.0240 72 0.0250 71 0.0260 0.7 mm 0.0276 70 0.0280 69 0.0292 68 0.0310 1/32 0.0312 0.8 mm 0.0315 67 0.0320 66 0.0330 65 0.0350 0.9 mm 0.0354 64 0.0360 63 0.0370 62 0.0380 61 0.0390 1.0 mm 0.0394 60 0.0400 59 0.0410 58 0.0420 57 0.0430 56 0.0465 3 / 64 0.0469 1.2 mm 0.0472 1.3 mm 0.0512 55 0.0520 54 0.0550 1.4 mm 0.0551 1.5 mm 0.0591 53 0.0595 1 / 16 0.0625 1.6 mm 0.0630 52 0.0635 1.7 mm 0.0669 51 0.0670 50 0.0700 1.8 mm 0.0709 49 0.0730 1.9 mm 0.0748 48 0.0760 5 / 64 0.0781 47 0.0785 2 mm 0.0787 46 0.0810 45 0.0820 Inch-Wire [mm] Decimal Inch 2.1 mm 0.0827 44 0.0860 2.2 mm 0.0866 43 0.0890 2.3 mm 0.0906 42 0.0935 3 / 32 0.0938 2.4 mm 0.0945 41 0.0960 40 0.0980 2.5 mm 0.0984 39 0.0995 38 0.1015 2.6 mm 0.1024 37 0.1040 2.7 mm 0.1063 36 0.1065 7 / 64 0.1094 35 0.1100 2.8 mm 0.1102 34 0.1110 33 0.1130 2.9 mm 0.1142 32 0.1160 3 mm 0.1181 31 0.1200 3.1 mm 0.1220 1 / 8 0.1250 3.2 mm 0.1260 30 0.1285 3.3 mm 0.1299 3.4 mm 0.1339 29 0.1360 3.5 mm 0.1378 28 0.1405 9 / 64 0.1406 3.6 mm 0.1417 27 0.1440 3.7 mm 0.1457 26 0.1470 25 0.1495 3.8 mm 0.1496 24 0.1520 3.9 mm 0.1535 23 0.1540 5 / 32 0.1563 22 0.1570 4 mm 0.1575 21 0.1590 20 0.1610 4.1 mm 0.1614 4.2 mm 0.1654 19 0.1660 4.3 mm 0.1693 18 0.1695 11 / 64 0.1719 17 0.1730 4.4 mm 0.1732 16 0.1770 4.5 mm 0.1772 Inch-Wire [mm] Decimal Inch 15 0.1800 4.6 mm 0.1811 14 0.1820 13 / 4.7 mm 0.1850 3 / 16 0.1875 12 / 4.8 mm 0.1890 11 0.1910 4.9 mm 0.1929 10 0.1935 9 0.1960 5 mm 0.1969 8 0.1990 5.1 mm 0.2008 7 0.2010 13 / 64 0.2031 6 0.2040 5.2 mm 0.2047 5 0.2055 5.3 mm 0.2087 4 0.2090 5.4 mm 0.2126 3 0.2130 5.5 mm 0.2165 7 / 32 0.2188 5.6 mm 0.2205 2 0.2210 5.7 mm 0.2244 1 0.2280 5.8 mm 0.2283 5.9 mm 0.2323 A 0.2340 15 / 64 0.2344 6 mm 0.2362 B 0.2380 6.1 mm 0.2402 C 0.2420 6.2 mm 0.2441 D 0.2460 6.3 mm 0.2480 1 / 4 / E 0.2500 6.4 mm 0.2520 6.5 mm 0.2559 F 0.2570 6.6 mm 0.2598 G 0.2610 6.7 mm 0.2638 17 / 64 0.2656 H 0.2660 6.8 mm 0.2677 6.9 mm 0.2717 I 0.2720 7 mm 0.2756 J 0.2770 7.1 mm 0.2795 K 0.2810 9 / 32 0.2813 7.2 mm 0.2835 7.3 mm 0.2874 L 0.2900 7.4 mm 0.2913 Inch-Wire [mm] Decimal Inch M 0.2950 7.5 mm 0.2953 19 / 64 0.2969 7.6 mm 0.2992 N 0.3020 7.7 mm 0.3031 7.8 mm 0.3071 7.9 mm 0.3110 5 / 16 0.3125 8 mm 0.3150 O 0.3160 8.1 mm 0.3189 8.2 mm 0.3228 P 0.3230 8.3 mm 0.3268 21 / 64 0.3281 8.4 mm 0.3307 Q 0.3320 8.5 mm 0.3346 8.6 mm 0.3386 R 0.3390 8.7 mm 0.3425 11 / 32 0.3438 8.8 mm 0.3465 S 0.3480 8.9 mm 0.3504 9 mm 0.3543 T 0.3580 9.1 mm 0.3583 23 / 64 0.3594 9.2 mm 0.3622 9.3 mm 0.3661 U 0.3680 9.4 mm 0.3701 9.5 mm 0.3740 3/8 0.3750 V 0.3770 9.6 mm 0.3780 9.7 mm 0.3819 9.8 mm 0.3858 W 0.3860 9.9 mm 0.3898 25 / 64 0.3906 10 mm 0.3937 X 0.3970 Y 0.4040 13 / 32 0.4063 Z 0.4130 10.5 mm 0.4134 27 / 64 0.4219 11 mm 0.4331 7 / 16 0.4375 11.5 mm 0.4528 29 / 64 0.4531 15 / 32 0.4688 12 mm 0.4724 31 / 64 0.4844 12.5 mm 0.4921 1 / 2 0.5000 13 mm 0.5118 Inch-Wire [mm] Decimal Inch 33 / 64 0.5156 17 / 32 0.5313 13.5 mm 0.5315 35 / 64 0.5469 14 mm 0.5512 9 / 16 0.5625 14.5 mm 0.5709 37 / 64 0.5781 15 mm 0.5906 19 / 32 0.5938 39 / 64 0.6094 15.5 mm 0.6102 5 / 8 0.6250 16 mm 0.6299 41 / 64 0.6406 16.5 mm 0.6496 21 / 32 0.6563 17 mm 0.6693 43 / 64 0.6719 11 / 16 0.6875 17.5 mm 0.6890 45 / 64 0.7031 18 mm 0.7087 23 / 32 0.7188 18.5 mm 0.7283 47 / 64 0.7344 19 mm 0.7480 3 / 4 0.7500 49 / 64 0.7656 19.5 mm 0.7677 25 / 32 0.7813 20 mm 0.7874 51 / 64 0.7969 20.5 mm 0.8071 13 / 16 0.8125 21 mm 0.8268 53 / 64 0.8281 27 / 32 0.8438 21.5 mm 0.8465 55 / 64 0.8594 22 mm 0.8661 7 / 8 0.8750 22.5 mm 0.8858 57 / 64 0.8906 23 mm 0.9055 29 / 32 0.9063 59 / 64 0.9219 23.5 mm 0.9252 15 / 16 0.9375 24 mm 0.9449 61 / 64 0.9531 24.5 mm 0.9646 31 / 32 0.9688 25 mm 0.9843 63 / 64 0.9844 1 1.0000