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Decimal Equivalant Chart

  Decimal Clearance   Decimal Clearance   Decimal Clearance   Decimal Clearance
  Equivalent Tap Sizes   Equivalent Tap Sizes   Equivalent Tap Sizes   Equivalent Tap Sizes
80 .0135   42 .0935 #4-48 UNF 2 .2210 1/4" - 36 Z .4130 1/2" - 12
0.35 .0138   3/32 .0938   5.70 .2244   10.50 .4134  
79 .0145   2.40 .0945   1 .2280   27/64 .4219 1/2" - 13 UNC
1/64 .0156   41 .0960   5.80 .2283   10.80 .4252  
0.40 .0157   2.45 .0965   5.90 .2323   11.00 .4331  
78 .0160   40 .0980   A .2340   7/16 .4375 1/4" NPT
0.45 .0177   2.50 .0984 M3 15/64 .2344   11.20 .4409  
77 .0180   39 .0995 #3 6.00 .2362   11.50 .4528  
0.50 .0197   38 .1015 #5-40 UNC B .2380   29/64 .4531 1/2" - 20 UNF
76 .0200   2.60 .1024   6.10 .2402   11.80 .4646  
75 .0210   37 .1040 #5-44 UNF C .2420   15/32 .4688 1/2" - 28
0.55 .0217   2.70 .1063   6.20 .2441   12.00 .4724  
74 .0225   36 .1065 #6-32 UNC D .2460   12.20 .4803  
0.60 .0236   7/64 .1094   6.30 .2480   31/64 .4844  
73 .0240   35 .1100   1/4 .2500   12.50 .4921  
72 .0250   2.80 .1102   E .2500   1/2 .5000  
0.65 .0256   34 .1110   6.40 .2520   12.80 .5039  
71 .0260   33 .1130 #6-40 UNF #4 6.50 .2559   13.00 .5118  
0.70 .0276   2.90 .1142 M3.5 F .2570 5/16" - 18 UNC 33/64 .5156  
70 .0280   32 .1160   6.60 .2598   13.20 .5197  
69 .0292   3 .1181   G .2610   17/32 .5313 5/8" - 11 UNC
0.75 .0295 M1 31 .1200   6.70 .2638   13.50 .5315  
68 .0310   3.10 .1220   17/64 .2656   13.80 .5433  
1/32 .0313   1/8 .1250 #5 H .2660   35/64 .5469  
0.80 .0315   3.20 .1260   6.80 .2677   14.00 .5512  
67 .0320   30 .1285   6.90 .2717   14.25 .5610  
66 .0330   3.30 .1299 M4 I .2720 5/16" - 24 UNF 9/16 .5625 5/8" - 18 UNF
0.85 .0335 M1.1 3.40 .1339   7.00 .2756   14.50 .5709  
65 .0350   29 .1360 #8-32 UNC #8-36 UNF J .2770   37/64 .5781  
0.90 .0354   3.50 .1378   7.10 .2795   14.75 .5807  
64 .0360   28 .1405 #6 K .2810 5/16" - 32 15.00 .5905  
63 .0370   9/64 .1406   9/32 .2813 5/16" - 36 19/32 .5938 3/8" NPT
0.95 .0374 M1.2 3.60 .1417   7.20 .2835   15.25 .6004  
62 .0380   27 .1440   7.30 .2874   39/64 .6094  
61 .0390   3.70 .1457 M4.5 L .2900   15.50 .6102  
1.00 .0394   26 .1470   7.40 .2913   15.75 .6201  
60 .0400   25 .1495 #10-24 UNC M .2950   5/8 .6250  
59 .0410   3.80 .1496   7.50 .2953   16.00 .6299  
1.05 .0413   24 .1520   19/64 .2969   16.25 .6398  
58 .0420   3.90 .1535   7.60 .2992   41/64 .6406 3/4" - 10 UNC
57 .0430   23 .1540   N .3020   16.50 .6496  
1.10 .0433 M1.4 5/32 .1563   7.70 .3031   21/32 .6563  
1.15 .0453   22 .1570   7.80 .3071   16.75 .6594  
56 .0465   4.00 .1575   7.90 .3110   17.00 .6693  
3/64 .0469 #0-80 UNF 21 .1590 #10-32 UNF 5/16 .3125 3/8" - 16 UNC 43/64 .6719  
1.20 .0472   20 .1610   8.00 .3150   17.25 .6791  
1.25 .0492   4.10 .1614   O .3160   11/16 .6875 3/4" - 16 UNF
1.30 .0512   4.20 .1654 M5 8.10 .3189   17.50 .6890  
55 .0520   19 .1660 #8 8.20 .3228   17.75 .6988  
1.35 .0531   4.30 .1693   P .3230   45/64 .7031  
54 .0550   18 .1695   8.30 .3268   18.00 .7087  
1.40 .0551   11/64 .1719   21/64 .3281   23/32 .7188 1/2" NPT
1.45 .0571 M1.8 17 .1730   8.40 .3307   18.50 .7283  
1.50 .0591   4.40 .1732   Q .3320 3/8" - 24 UNF 47/64 .7344  
53 .0595 #1-64 UNC #1-72 UNF 16 .1770   8.50 .3346   19.00 .7480  
1.55 .0610   4.50 .1772   8.60 .3386   3/4 .7500  
1/16 .0625 #0 15 .1800   R .3390   49/64 .7656 7/8" - 9 UNC
1.60 .0630 M2 4.60 .1811   8.70 .3425   19.50 .7677  
52 .0635   14 .1820   11/32 .3438 3/8" - 32 1/8" NPT 25/32 .7813  
1.65 .0650   13 .1850   8.80 .3465   20.00 .7874  
1.70 .0669   4.70 .1850   S .3480 3/8" - 36 51/64 .7969  
51 .0670   3/16 .1875   8.90 .3504   20.50 .8071  
1.75 .0689 M2.2 4.80 .1890   9.00 .3543   13/16 .8125 7/8" - 14 UNF
50 .0700 #2-56 UNC #2-64 UNF 12 .1890   T .3580 7/16" - 14 UNC 21.00 .8268  
1.80 .0709   11 .1910 #10 9.10 .3583   53/64 .8281  
1.85 .0728   4.90 .1929   23/64 .3594   27/32 .8438  
49 .0730 #1 10 .1935   9.20 .3622   21.50 .8465  
1.90 .0748   9 .1960   9.30 .3661   55/64 .8594  
48 .0760   5.00 .1969   U .3680   22.00 .8661  
1.95 .0768   8 .1990   9.40 .3701   7/8 .8750 1" - 8 UNC
5/64 .0781   5.10 .2008 M6 9.50 .3740   22.50 .8858  
47 .0785 #3-48 UNC 7 .2010 1/4" - 20 UNC 3/8 .3750   57/64 .8906  
2.00 .0787   13/64 .2031   V .3770   23.00 .9055  
2.05 .0807 M2.5 6 .2040   9.60 .3780   29/32 .9063 1" - 12 UNF
46 .0810   5.20 .2047   9.70 .3819   59/64 .9219  
45 .0820 #3-56 UNF 5 .2050   9.80 .3858   23.50 .9252  
2.10 .0827   5.30 .2087   W .3860   15/16 .9375 3/4" NPT
2.15 .0846   4 .2090   9.90 .3898   24.00 .9449  
44 .0860 #2 5.40 .2126   25/64 .3906 7/16" - 20 UNF 61/64 .9531  
2.20 .0866   3 .2130 1/4" - 28 UNF 10.00 .3937   24.50 .9646  
2.25 .0886   5.50 .2165   X .3970   31/32 .9688  
43 .0890 #4-40 UNC 7/32 .2188 1/4" - 32 10.20 .4016   25.00 .9843  
2.30 .0906   5.60 .2205   Y .4040 7/16" - 28 63/64 .9844  
2.35 .0925         13/32 .4063   1 1.0000  
FRACTION - NUMBER - LETTER - MM

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 Last modified: 01/06/2007 by Cheryl Vanderbilt