Gauges

WIRE & SHEET METAL GAUGES
NUMBER IMPERIAL STANDARD  (s.w.g.) AMERICAN STANDARD (BROWN & SHARPE)  STUBS (BIRMINGHAM WIRE)  BIRMINGHAM SHEET ZINC
  in. mm. in. mm. in. mm. in mm. in. mm.
7/0 .500 12.70         .667 16.93    
6/0 .464 11.78         .625 15.87    
5/0 .432 10.97         .588 14.92    
4/0 .400 10.16 .4600 11.68 .454 11.53 .542 13.78    
3/0 .372 9.45 .4096 10.40 .425 10.79 .500 12.70    
2/0 .345 8.84 .3648 9.26 .038 9.65 .445 11.30    
0 .324 8.23 .3249 8.25 .340 8.63 .396 10.05    
1 .300 7.62 .2893 7.35 .300 7.62 .353 8.96 .004 .102
2 .276 7.01 .2576 6.54 .284 7.21 .315 8.00 .006 .152
3 .252 6.40 .2294 5.82 .259 6.58 .280 7.11 .007 .178
4 .232 5.89 .2043 5.19 .238 6.05 .250 6.35 .008 .203
5 .212 5.38 .1819 4.62 .220 5.59 .222 5.64 .010 .254
6 .192 4.88 .1620 4.11 .203 5.16 .198 5.03 .011 .279
7 .176 4.47 .1443 3.66 .180 4.57 .176 4.47 .013 .330
8 .160 4.06 .1285 3.26 .165 4.19 .157 3.99 .015 .381
9 .144 3.66 .1144 2.91 .148 3.76 .140 3.56 .017 .432
10 .128 3.25 .1019 2.58 .134 3.40 .125 3.18 .019 .483
11 .116 2.95 .0907 2.30 .120 3.04 .111 2.82 .022 .559
12 .104 2.64 .0808 2.05 .092 2.77 .099 2.51 .025 .635
13 .092 2.34 .0720 1.83 .095 2.41 .088 2.24 .028 .711
14 .080 2.03 .0641 1.63 .083 2.11 .078 1.98 .031 .787
15 .072 1.83 .0571 1.45 .072 1.83 .070 1.78 .036 .914
16 .064 1.63 .0508 1.29 .065 1.65 .062 1.57 .041 1.04
17 .056 1.42 .0453 1.15 .058 1.47 .056 1.42 .046 1.17
18 .048 1.22 .0403 1.02 .049 1.24 .050 1.27 .051 1.30
NUMBER IMPERIAL STANDARD  (s.w.g.) AMERICAN STANDARD (BROWN & SHARPE)  STUBS (BIRMINGHAM WIRE)  BIRMINGHAM SHEET ZINC
  in. mm. in. mm. in. mm. in mm. in. mm.
19 .040 1.02 .0359 .911 .042 1.07 .044 1.12 .057 1.45
20 .036 .914 .0320 .813 .035 .888 .039 .990 .063 1.60
21 .032 .813 .0285 .724 .032 .813 .035 .888 .070 1.78
22 .028 .711 .0253 .643 .028 .711 .031 .787    
23 .024 .610 .0226 .574 .025 .635 .028 .711    
24 .0220 .559 .0201 .511 .022 .559 .02476 .629     
25 .0200 .508 .0179 .455 .020 .508 .02204 .560     
26 .0180 .457 .01594 .405 .018 .457 .01961 .498    
27 .0164 .417 .01419 .360 .016 .406 .01745 .443    
28 .0148 .376 .01264 .321 .014 356 .01562 .397    
29 .0136 .345 .01126 .286 .013 .330 .01390 .353    
30 .0124 .315 .01002 .254 .012 .305 .01230 .312    
31 .0116 .295 .00893 .227 .010 .254 .01100 .279    
32 .0108 .274 .00795 .202 .009 .228 .00980 .249    
33 .0100 .254 .00708 .180 .008 .203 .00870 .221    
34 .0092 .234 .00630 .160 .007 .178 .00770 .196    
35 .0084 .213 .00561 .142 .005 .127 .00690 .175    
36 .0076 .193 .00500 .127 .004 .102 00610 .155    
37 .0068 .173 .00445 .113     .00540 .137    
NUMBER IMPERIAL STANDARD  (s.w.g.) AMERICAN STANDARD (BROWN & SHARPE)  STUBS (BIRMINGHAM WIRE)  BIRMINGHAM SHEET ZINC
  in. mm. in. mm. in. mm. in mm. in. mm.
38 .0060 .152 .00396 .100     .00480 .122    
39 .0052 .132 .00353 .0896     .00430 .109    
40 .0048 .122 .00314 .0797     .00386 .0980    
41 .0044 .112         .00343 .0871    
42 .0040 .102          .00306 .0776    
43 .0036 .0914         .00272 .0691    
44 .0032 .0813         .00242 .0615    
45 .0028 .0711         .00215 .0545    
46 .0024 .0610          .00192 .0487    
47 .0020 .0508          .00170 .0431    
48 .0016 .0406         .00152 .0386    
49 .0012 .0305         .00135 .0343    
50 .0010 .0254          .00120 .0305    
51             .00107 .0272    
52              .00095 .0241    

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.