Wire Number (Guage) Conversion Tables

Gauge Conversion
Wire NumberStandard Wire GuageStandard Wire GuageAmerican Wire GuageAmerican Wire Guage
(Gauge)SWG (mm)SWG (inches)(AWG or B&S) mm(AWG or B&S) inches
0000000 (7/0)12.70.5  
000000 (6/0)11.78560.46414.7320.58
00000 (5/0)10.97280.43213.11910.5165
0000 (4/0)10.160.411.6840.46
000 (3/0)9.44880.37210.404910.409642
00 (2/0)8.83920.3489.2658180.364796
0 (1/0)8.22960.3248.2514690.324861
17.620.37.3481440.289297
27.01040.2766.5437260.257627
36.40080.2525.8273440.229423
45.89280.2325.189220.2043
55.38480.2124.620260.1819
64.87680.1924.11480.162
74.47040.1763.665220.1443
84.0640.163.26390.1285
93.65760.1442.905760.1144
103.25120.1282.588260.1019
112.94640.1162.303780.0907
122.64160.1042.052320.0808
132.33680.0921.82880.072
142.0320.081.628140.0641
151.82880.0721.450340.0571
161.62560.0641.290320.0508
171.42240.0561.150620.0453
181.21920.0481.023620.0403
191.0160.040.911860.0359
200.91440.0360.81280.032
210.81280.0320.72390.0285
220.71120.0280.642620.0253
230.60960.0240.574040.0226
240.55880.0220.510540.0201
250.5080.020.454660.0179
260.45720.0180.403860.0159
270.416560.01640.360680.0142
280.375920.01480.320040.0126
290.345440.01360.287020.0113
300.314960.01240.2540.01
310.294640.01160.226060.0089
320.274320.01080.20320.008
330.2540.010.180340.0071
340.233680.00920.160020.0063
350.213360.00840.142240.0056
360.193040.00760.1270.005
370.172720.00680.11430.0045
380.15240.0060.10160.004
390.132080.00520.08890.0035
400.121920.00480.078740.0031
410.111760.00440.071120.0028
420.10160.0040.06350.0025
430.091440.00360.055880.0022
440.081280.00320.05080.002
450.071120.00280.045720.0018
460.060960.00240.040640.0016
470.05080.0020.035560.0014
480.040640.00160.030480.0012
490.030480.00120.027940.0011
500.02540.0010.02540.001
51  0.0223520.00088
52  0.0198120.00078
53  0.017780.0007
54  0.0157480.00062
55  0.013970.00055
56  0.0124460.00049

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.