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Sizes Dec. TAP Sizes Dec. TAP Sizes Dec. TAP Sizes Dec. TAP
  Inches Sizes   Inches Sizes   Inches Sizes   Inches Sizes
97 .0059   1.65mm .0650   5.1mm .2008   9.9mm .3898  
.15mm .0059   1.7mm .0669   7 .2010 1/4---20 25/64 .3906 7/16---20
96 .0063   51 .0670 #2---56 13/64 .2031   10mm .3937 m12x1.75
.16mm .0063   1.75mm .0689 m2.2x0.45 6 .2040   X .3970  
95 .0067   50 .0700 #2---64 5.2mm .2047   Y .4040  
.17mm .0067   1.8mm .0709   5 .2055   13/32 .4062  
94 .0071   1.85mm .0728   5.25mm .2067 m6x0.75 Z .4130  
.18mm .0071   49 .0730   5.3mm .2087   10.5mm .4134 m12x1.25
93 .0075   1.9mm .0748 m2.3x0.4 4 .2090 1/4---24 27/64 .4219 1/2---13
.19mm .0075   48 .0760   5.4mm .2126   11mm .4331  
92 .0079   1.95mm .0768   3 .2130 1/4---28 7/16 .4375 1/4-18 NPT PIPE
.2mm .0079   5/64 .0781   5.5mm .2165   11.5mm .4528  
91 .0083   47 .0785 #3---48 7/32 .2188   29/64 .4531 1/4-18NPS/PIPE 1/2x20
.21mm .0083   2mm .0787   5.6mm .2205   15/32 .4688  
90 .0087   2.05mm .0807 m2.5x0.45 2 .2210   12mm .4724 m14x2
.22mm .0087   46 .0810   5.7mm .2244   31/64 .4844 9/16---12
89 .0091   45 .0820 #3---56 5.75mm .2264   12.5mm .4921 m14x1.5
.23mm .0091   2.1mm .0827   1 .2280   1/2 .5000  
.24mm .0094   2.15mm .0846 m2.6x0.45 5.8mm .2283   13mm .5118 m14x1.25
88 .0095   44 .0860 #4---36 5.9mm .2323   33/64 .5156 9/16---18
.25mm .0098   2.2mm .0866   A .2340   17/32 .5312 5/8---11
87 .0100   2.25mm .0886   15/64 .2344   13.5mm .5315  
.26mm .0102   43 .0890 #4---40 6mm .2362 m7x1 35/64 .5469  
86 .0105   2.3mm .0906   B .2380   14mm .5512 m16x2
.27mm .0106   2.35mm .0925   6.1mm .2402   9/16 .5625  
85 .0110   42 .0935 #4---48 C .2420   14.5mm .5709 m16x1.50
.28mmm .0110   3/32 .0938   6.2mm .2441   37/64 .5781 3/8-18NPT/PIPE 5/8-18NF
.29mm .0114   2.4mm .0945   D .2460 1/16-27NPT PIPE 15mm .5906  
84 .0115   41 .0960   6.25mm .2461   19/32 .5938 3/8-18NPS PIPE
.3mm .0118   2.45mm .0965   6.3mm .2480   39/64 .6094  
83 .0120   40 .0980   E .2500   15.5mm .6102 m18x2.5
82 .0125   2.5mm .0984 m3x0.5 1/4 .2500 1/16-27NPS PIPE 5/8 .6250 11/16-16NS
.32mm .0126   39 .0995   6.4mm .2520   16mm .6299 m18x2.0
81 .0130   38 .1015 #5---40 6.5mm .2559   41/64 .6406  
.34mm .0134   2.6mm .1024   F .2570 5/16-18NC 16.5mm .6496  
80 .0135   37 .1040   6.6mm .2598   21/32 .6562 3/4-10NC
.35mm .0138   2.7mm .1063 #5---44 G .2610   17mm .6693  
.36mm .0142   36 .1065   6.7mm .2638   43/64 .6719  
79 .0145   2.75mm .1083 #6---32 17/64 .2656   11/16 .6875 3/4-16NF
.38mm .0150   7/64 .1094   6.75mm .2657 m8x1.25 17.5mm .6890 m20x2.5
1/64 .0156   35 .1100   H .2660   45/64 .7031  
.4mm .0157   2.8mm .1102   6.8mm .2677   18mm .7087 m20x2.0
78 .0160   34 .1110   6.9mm .2717   23/32 .7188 1/2-14NPT PIPE
.42mm .0165   33 .1130 #6---40 I .2720 5/16-24NF 18.5mm .7283 m20x1.5
.44mm .0173   2.9mm .1142 m3.5x0.6 7mm .2756 m8x1 47/64 .7344 1/2-14NPS PIPE
.45mm .0177   32 .1160   J .2770   19mm .7480  
77 .0180   3mm .1181   7.1mm .2795   3/4 .7500  
.46mm .0181   31 .1200   K .2810   49/64 .7656 7/8-9NC
.48mm .0189   3.1mm .1220   9/32 .2812 5/16-32NS 19.5mm .7677 m22x2.5
.5mm .0197   1/8 .1250 5/32-32NS 7.2mm .2835   25/32 .7812  
76 .0200   3.2mm .1260   7.25mm .2854   20mm .7874 m22x2.0
75 .0210   3.25mm .1280   7.3mm .2874   51/64 .7969  
.55mm .0217   30 .1285 5/32-36NS L .2900   20.5mm .8071 m22x1.5
74 .0225   3.3mm .1299 m4x0.7 7.4mm .2913   13/16 .8125 7/8-14NF
.6mm .0236   3.4mm .1339   M .2950   21mm .8268  
73 .0240   29 .1360 #8---32 7.5mm .2953   53/64 .8281  
72 .0250   3.5mm .1378   19/64 .2969   27/32 .8438  
.65mm .0256   28 .1405   7.6mm .2992   21.5mm .8465  
71 .0260   9/64 .1406   N .3020   55/64 .8594  
.7mm .0276   3.6mm .1417   7.7mm .3031   22mm .8661 m24x2
70 .0280   27 .1440   7.75mm .3051 m9x1.25 7/8 .8750 1-8NC
69 .0292   3.7mm .1457   7.8mm .3071   22.25mm .8760  
.75mm .0295   26 .1470 3/16-24NS 7.9mm .3110   22.5mm .8858 m24x1.50
68 .0310   3.75mm .1476 m4.5x0.75 5/16 .3125 3/8-16NC 57/64 .8906  
1/32 .0312   25 .1495 #10---24 8mm .3150   23mm .9055  
.8mm .0315   3.8mm .1496   O .3160   29/32 .9062  
67 .0320   24 .1520   8.1mm .3189   59/64 .9219 3/4-14NPT PIPE
66 .0330   3.9mm .1535   8.2mm .3228   23.5mm .9252  
.85mm .0335   23 .1540   P .3230   15/16 .9375 3/4-14NPS/PIPE 1-14NF
65 .0350   5/32 .1562   8.25mm .3248   24mm .9449 m27x3
.9mm .0354   22 .1570 3/16-32NS 8.3mm .3268   61/64 .9531  
64 .0330   4mm .1575   21/64 .3281   24.5mm .9646  
63 .0370   21 .1590 #10---32 8.4m .3307   31/32 .9688  
.95mm .0374   20 .1610   Q .3320 3/8-24NF 25mm .9843 m27x2
62 .0380   4.1mm .1614   8.5mm .3346 m10x1.5 63/64 .9844 1-1/8---7NC
61 .0390   4.2mm .1654 m5x0.8 8.6mm .3386   1 1.0000  
1mm .0394   19 .1660   R .3390 1/8-27 NPT PIPE 25.5mm 1.0039  
60 .0400   4.25mm .1673   8.7mm .3425   1-1/64 1.0156  
59 .0410   4.3mm .1693   11/32 .3438   26mm 1.0236  
1.05mm .0413   18 .1695   8.75mm .3445 m10x1.25 1-1/32 1.0312  
58 .0420   11/64 .1719   8.8mm .3465   26.5mm 1.0433 m30x3.5
57 .0430   17 .1730   S .3480 1/8-27 NPS PIPE 1-3/64 1.0469 1/1/8-12NF
1.1mm .0433   4.4mm .1732   8.9mm .3504   1-1/6 1.0625  
1.15mm .0453   16 .1770 #12---24 9mm .3543 m10x1.00 27mm 1.0630  
56 .0456   4.5mm .1772   T .3580   1-5/64 1.0781  
3/64 .0469 #0---80 15 .1800   9.1mm .3583   27.5mm 1.0827  
1.2mm .0472   4.6mm .1811   23/64 .3594   1-3/32 1.0938  
1.25mm .0492 m1.6x0.35 14 .1820 #12---28 9.2mm .3622   28mm 1.1024 m30x2.0
1.3mm .0512   13 .1850   9.25mm .3642   1-7/64 1.1094 1-1/4-7NC
55 .0520   4.7mm .1850   9.3mm .3661   28.5mm 1.1220  
1.35mm .0531   4.75mm .1870   U .3680 7/16-14NC 1-1/8 1.1250  
54 .0550   3/16 .1875   9.4mm .3701   1-9/64 1.1406  
1.4mm .0551   4.8mm .1890   9.5mm .3740 m11x1.50 29mm 1.1417  
1.45mm .0571 m1.8x0.35 12 .1910 7/32-32NS 3/8 .3750   1-5/32 1.1562 1-11-1/2NPT PIPE
1.5mm .0591   11 .1910   V .3770   29.5mm 1.1614  
53 .0595 #1---64,72 4.9mm .1929   9.6mm .3780   1-11/64 1.1719 1-1/4-12NF
1.55mm .0610   10 .1935   9.7mm .3819  
1/16 .0625   9 .1960   9.75mm .3839   2000 Mercatech, Inc.
1.6mm .0630 m2x0.4 5mm .1969 m6x1 9.8mm .3858  
52 .0635   8 .1990   W .3860