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TAP | TAP DRILL | Decimal Drill Size | Theo. % of Thread | Probable Oversize | Probable Hole Size | % of Thread |
---|---|---|---|---|---|---|
0-80 | 56 | .0465 | 83 | .0015 | .0480 | 74 |
3/64 | .0469 | 81 | .0015 | .0480 | 71 | |
1-64 | 54 | .0550 | 89 | .0015 | .0565 | 81 |
53 | .0595 | 67 | .0015 | .0610 | 59 | |
1-72 | 53 | .0595 | 75 | .0015 | .0610 | 67 |
1/16 | .0625 | 58 | .0015 | 0640 | 50 | |
2-56 | 51 | .0670 | 82 | .0017 | 0687 | 74 |
50 | .0770 | 69 | .0017 | .0717 | 62 | |
49 | .0730 | 56 | .0017 | .0747 | 49 | |
2-64 | 50 | .0700 | 79 | .0017 | .0717 | 70 |
49 | .0730 | 64 | .0017 | .0747 | 56 | |
3-48 | 48 | .0760 | 85 | .0019 | .0779 | 78 |
5/64 | .0781 | 77 | .0019 | .0800 | 70 | |
47 | .0785 | 76 | .0019 | .0804 | 69 | |
46 | .0810 | 67 | .0019 | .0829 | 60 | |
45 | .0820 | 63 | .0019 | .0839 | 56 | |
3-56 | 46 | .0810 | 78 | .0019 | .0829 | 69 |
45 | .0820 | 73 | .0019 | .0839 | 65 | |
44 | .0860 | 56 | .0020 | .0880 | 47 | |
4-40 | 44 | .0860 | 80 | .0020 | .0880 | 74 |
43 | .0890 | 71 | .0020 | .0910 | 65 | |
42 | .0935 | 57 | .0020 | .0955 | 51 | |
3/32 | .0938 | 56 | .0020 | .0958 | 50 | |
4-48 | 42 | .0935 | 68 | .0020 | .0955 | 61 |
3/32 | .0938 | 68 | .0020 | .0958 | 60 | |
41 | .0960 | 59 | .0020 | .0980 | 52 | |
5-40 | 40 | .0980 | 83 | .0023 | .1003 | 76 |
39 | .0995 | 79 | .0023 | .1018 | 71 | |
38 | .1015 | 72 | .0023 | .1038 | 65 | |
37 | .1040 | 65 | .0023 | .1063 | 58 | |
5-44 | 38 | .1015 | 79 | .0023 | .1038 | 72 |
37 | .1040 | 71 | .0023 | .1063 | 63 | |
36 | .1065 | 63 | .0023 | .1088 | 55 | |
6-32 | 37 | .1040 | 84 | .0023 | .1063 | 78 |
36 | .1065 | 78 | .0023 | .1088 | 72 | |
7-64 | .1094 | 70 | .0026 | .1120 | 64 | |
35 | .1100 | 69 | .0026 | .1126 | 63 | |
34 | .1110 | 67 | .0026 | .1136 | 60 | |
33 | .1130 | 62 | .0026 | .1156 | 55 | |
6-40 | 34 | .1110 | 83 | .0026 | .1136 | 75 |
33 | .1130 | 77 | .0026 | .1156 | 69 | |
32 | .1160 | 68 | .0026 | .1186 | 60 | |
8-32 | 29 | .1360 | 69 | .0029 | .1389 | 62 |
28 | .1405 | 58 | .0029 | .1434 | 51 | |
8-36 | 29 | .1360 | 78 | .0029 | .1389 | 70 |
28 | .1405 | 68 | .0029 | .1434 | 57 | |
9-64 | .1406 | 68 | .0029 | .1435 | 57 | |
10-24 | 27 | .1440 | 85 | .0032 | .1472 | 79 |
26 | .1470 | 79 | .0032 | .1502 | 74 | |
25 | .1495 | 75 | .0032 | .1527 | 69 | |
24 | .1520 | 70 | .0032 | .1552 | 64 | |
23 | .1540 | 67 | .0032 | .1572 | 61 | |
10-32 | 5/32 | .1563 | 83 | .0032 | .1595 | 75 |
22 | .1570 | 81 | .0032 | .1602 | 73 | |
21 | .1590 | 76 | .0032 | .1622 | 68 | |
20 | .1610 | 71 | .0032 | .1642 | 64 | |
19 | .1660 | 59 | .0032 | .1692 | 51 | |
12-24 | 11/64 | .1719 | 82 | .0035 | .1754 | 75 |
17 | .1730 | 79 | .0035 | .1765 | 73 | |
16 | .1770 | 72 | .0035 | .1805 | 66 | |
15 | .1800 | 67 | .0035 | .1835 | 60 | |
14 | .1820 | 63 | .0035 | .1855 | 56 | |
12-28 | 16 | .1770 | 84 | .0035 | .1805 | 77 |
15 | .1800 | 78 | .0035 | .1835 | 70 | |
14 | .1820 | 73 | .0035 | .1855 | 66 | |
13 | .1850 | 67 | .0035 | .1885 | 59 | |
3/16 | .1875 | 61 | .0036 | .1910 | 54 | |
1/4-20 | 9 | .1960 | 83 | .0038 | .1998 | 77 |
8 | .1990 | 79 | .0038 | .2028 | 73 | |
7 | .2010 | 75 | .0038 | .2048 | 70 | |
13/64 | .2031 | 72 | .0038 | .2069 | 66 | |
6 | .2040 | 71 | .0038 | .2078 | 65 | |
5 | .2055 | 69 | .0038 | .2093 | 63 | |
4 | .2090 | 63 | .0038 | .2128 | 57 | |
1/4-28 | 3 | .2130 | 80 | .0038 | .2168 | 72 |
7/32 | .2188 | 67 | .0038 | .2226 | 59 | |
2 | .2210 | 63 | .0038 | .2248 | 55 | |
5/16-18 | F | .2570 | 77 | .0038 | .2608 | 72 |
G | .2610 | 71 | .0041 | .2651 | 66 | |
17/64 | .2656 | 65 | .0041 | .2697 | 59 | |
H | .2660 | 64 | .0041 | .2701 | 59 | |
5/16-24 | H | .2660 | 86 | .0041 | .2701 | 78 |
I | .2720 | 75 | .0041 | .2761 | 67 | |
J | .2770 | 66 | .0041 | .2811 | 58 | |
3/8-16 | 5/16 | .3125 | 77 | .0044 | .3169 | 72 |
O | .3160 | 73 | .0044 | .3204 | 68 | |
P | .323 | 64 | .0044 | .3274 | 59 | |
3/8-24 | 21/64 | .3281 | 87 | .0044 | .3325 | 79 |
Q | .3320 | 79 | .0044 | .3364 | 71 | |
R | .3390 | 67 | .0044 | .3434 | 58 | |
7/16-14 | T | .3580 | 86 | .0046 | .3626 | 81 |
23/64 | .3594 | 84 | .0046 | .3640 | 79 | |
U | .3680 | 75 | .0046 | .3726 | 70 | |
3/8 | .3750 | 67 | .0046 | .3796 | 62 | |
V | .3770 | 65 | .0046 | .3816 | 60 | |
7/16-20 | W | .3860 | 79 | .0046 | .3906 | 72 |
25/64 | .3906 | 72 | .0046 | .3952 | 65 | |
X | .3970 | 62 | .0046 | .4016 | 55 | |
1/2-13 | 27/64 | .4219 | 78 | .0047 | .4266 | 73 |
7/16 | .4375 | 63 | .0047 | .4422 | 58 | |
1/2-20 | 29/64 | .4531 | 72 | .0047 | .4578 | 65 |
9/16-12 | 15/32 | .4688 | 87 | .0048 | .4736 | 82 |
31/64 | .4844 | 72 | .0048 | .4892 | 68 | |
9/16-18 | 1/2 | .500 | 87 | .0048 | .5048 | 80 |
33/64 | .5156 | 65 | .0048 | .5204 | 58 | |
5/8-11 | 17/32 | .5313 | 79 | .0049 | .5362 | 75 |
35/64 | .5469 | 66 | .0049 | .5518 | 62 | |
5/8-18 | 9/16 | .5625 | 87 | .0049 | .5674 | 80 |
37/64 | .5781 | 65 | .0049 | .5831 | 58 | |
3/4-10 | 41/64 | .6406 | 84 | .0050 | .6456 | 80 |
21/32 | .6563 | 72 | .0050 | .6613 | 68 | |
3/4-16 | 11/16 | .6875 | 77 | .0050 | .6925 | 71 |
7/8-9 | 49/64 | .7656 | 76 | .0052 | .7708 | 72 |
25/32 | .7812 | 65 | .0052 | .7864 | 61 | |
7/8-14 | 51/64 | .7969 | 84 | .0052 | .8021 | 79 |
13/16 | .8125 | 67 | .0052 | .8177 | 62 | |
1-8 | 55/64 | .8594 | 87 | .0059 | .8653 | 83 |
7/8 | .875 | 77 | .0059 | .8809 | 73 | |
57/64 | .8906 | 67 | .0059 | .8965 | 64 | |
1-12 | 29/32 | .9063 | 58 | .0059 | .9122 | 54 |
29/32 | .9063 | 87 | .0059 | .9122 | 81 | |
1-14 | 59/64 | .9219 | 72 | .0060 | .9279 | 67 |
15/16 | .9375 | 58 | .0060 | .9435 | 52 | |
1-14 | 59-64 | .9219 | 84 | .0060 | .9279 | 78 |
15/16 | .9375 | 67 | .0060 | .9435 | 61 | |
1-1/8-7 | 31/32 | .9688 | 84 | .0062 | .9750 | 81 |
63/64 | .9844 | 76 | .0067 | .9911 | 72 | |
1 | 1.000 | 67 | .0070 | 1.007 | 64 | |
1-1/64 | 1.0156 | 59 | .0070 | 1.0226 | 55 | |
1-1/8-12 | 1-1/32 | 1.0313 | 87 | .0071 | 1.0384 | 80 |
1-3/64 | 1.0469 | 72 | .0072 | 1.0541 | 66 | |
1-1/4-7 | 1-3/32 | 1.0938 | 84 | REAMING RECOMMENDED | ||
1-7/64 | 1.1094 | 76 | REAMING RECOMMENDED | |||
1-1/8 | 1.125 | 67 | REAMING RECOMMENDED | |||
1-1/4-12 | 1-5/32 | 1.1563 | 87 | REAMING RECOMMENDED | ||
1-11/64 | 1.1719 | 72 | REAMING RECOMMENDED | |||
1-3/8-6 | 1-3/16 | 1.1875 | 87 | REAMING RECOMMENDED | ||
1-13/64 | 1.2031 | 79 | REAMING RECOMMENDED | |||
1-7/32 | 1.2188 | 72 | REAMING RECOMMENDED | |||
1-15/64 | 1.2344 | 65 | REAMING RECOMMENDED | |||
1-3/8-12 | 1-9/32 | 1.2813 | 87 | REAMING RECOMMENDED | ||
1-19/64 | 1.2969 | 72 | REAMING RECOMMENDED | |||
1-1/2-6 | 1-5/16 | 1.3125 | 87 | REAMING RECOMMENDED | ||
1-21/64 | 1.3281 | 79 | REAMING RECOMMENDED | |||
1-11/32 | 1.3438 | 72 | REAMING RECOMMENDED | |||
1-23/64 | 1.3594 | 65 | REAMING RECOMMENDED | |||
1-1/2-12 | 1-13/32 | 1.4063 | 87 | REAMING RECOMMENDED | ||
1-27/64 | 1.4219 | 72 | REAMING RECOMMENDED |