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Industrial Hardware and Specialties is classified as an ESSENTIAL business and is fully operational.

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American National Standard
(U.S. Customary Units)
TAP SIZE TAP DRILL SIZE M/M DECIMAL EQUIV. OF TAP DRILL (INCHES) PROBABLE % OF THREAD
0-80 56   0.0465 74
  3/64 1.20 0.0469 72
1-64 54 1.40 0.0550 81
  53 1.50 0.0595 59
1-72 53 1.50 0.0595 67
  1/16   0.0625 50
2-56 51   0.0670 75
  50 1.75 0.0700 62
2-64 50 1.80 0.0700 71
  49   0.0730 56
3-48 48 2.00 0.0760 79
  5/64   0.0781 71
3-56 46 2.10 0.0810 71
  45   0.0820 66
4-40 44   0.0860 75
  43 2.25 0.0890 66
  42   0.0935 51
  3/32   0.0938 50
4-48 42 2.35 0.0935 62
  3/32   0.0938 60
5-40 39   0.0995 73
  38 2.60 0.1015 67
5-44 38   0.1015 74
  37 2.60 0.1040 65
6-32 36 2.70 0.1065 73
  7/64   0.1095 66
6-40 33 2.90 0.1130 72
  32   0.1160 62
8-32 29 3.40 0.1360 64
8-36 29 3.54 0.1350 72
  9/64   0.1406 60
10-24 25 3.80 0.1495 71
10-32 5/32   0.1563 78
  21 4.00 0.1590 72
12-34 11/64   0.1719 78
  17 4.50 0.1730 76
12-28 16   0.1770 80
  15 4.60 0.1800 73
1/4-20 9   0.1960 80
  7 5.10 0.2010 72
  13/64   0.2031 69
1/4-28 3   0.2130 75
  7/32 5.50 0.2188 59
5/16-18 F 6.50 0.2570 74
  G   0.2610 68
5/16-24 H   0.2660 78
  I 6.90 0.2720 70
3/8-16 5/16 8.00 0.3125 74
  O   0.3160 69
3/8-24 Q 8.50 0.3320 75
  R   0.3390 58
7/16-14 23/64 9.30 0.3594 81
  U   0.3680 70
7/16-20 W   0.3860 75
  25/64 9.90 0.3906 68
1/2-13 27/64 10.75 0.4219 75
  7/16   0.4375 58
1/2-20 29/64 11.50 0.4531 67
9/16-12 15/32   0.4688 84
  31/64 12.00 0.4844 69
9/16-18 1/2   0.5000 82
  33/64 13.00 0.5156 60
5/8-11 17/32 13.50 0.5313 76
  35/64   0.5469 63
5/8-18 9/16   0.5625 82
  37/64 14.50 0.5781 60
3/4-10 41/64   0.6406 81
  21/32 16.50 0.6563 69
3/4-16 11/16 17.50 0.6875 72
7/8-9 49/64 18.50 0.7656 73
  25/32   0.7813 62
7/8-14 51/64   0.7969 79
  13/16 20.50 0.8125 62
1-8 7/8 22.50 0.8750 74
  57/64   0.8906 64
1-12 29/32   0.9063 82
  59/64 23.50 0.9219 68
1-14 59/64   0.9219 79
  15/16 23.50 0.9375 62
1-1/8-7 63/64 25.00 0.9844 73
  1   1.0000 65
1-1/8-12 1-1/32   1.0313 82
  1-3/64 26.50 1.0469 67
1-1/4-7 1-3/32   1.0938 81
  1-7/64 28.00 1.1094 73
  1-1/8   1.1250 64
1-1/4-12 1-5/32   1.1563 81
  1-11/64 29.50 1.1719 67
1-3/8-6 1-13-64   1.2031 77
  1-7/32 31.00 1.2188 69
  1-15/64   1.2344 62
1-3/8-12 1-9/32   1.2813 81
  1-19/64 33.00 1.2969 66
1-1/2-6 1-11/32 34.00 1.3438 69
  1-23/64   1.3594 62
1/1/2-12 1-13/32   1.4063 80
  1-27/64 36.00 1.4219 66