Steel Thickness Conversion Table (gauge - inch - mm)
Gauge No.
B.W.G.
U.S.G.
Gauge No.
B.W.G.
U.S.G.
inch
mm
inch
mm
inch
mm
inch
mm
6
.203
5.156
.2031
5.16
21
.032
.813
.0344
.873
7
.180
4.572
.1875
4.76
22
.028
.711
.0313
.794
8
.165
4.191
.1719
4.37
23
.025
.635
.0281
.714
9
.148
3.759
.1563
3.97
24
.022
.559
.0250
.635
10
.134
3.404
.1406
3.57
25
.020
.508
.0219
.556
11
.120
3.048
.1250
3.18
26
.018
.457
.0188
.478
12
.109
2.769
.1094
2.78
27
.016
.406
.0172
.437
13
.095
2.413
.0938
2.38
28
.014
.356
.0156
.396
14
.083
2.108
.0781
1.98
29
.013
.330
.0141
.358
15
.072
1.829
.0703
1.79
30
.012
.305
.0125
.318
16
.065
1.651
.0625
1.59
31
.010
.254
.0109
.277
17
.058
1.473
.0563
1.43
32
.009
.229
.0102
.259
18
.049
1.245
.0500
1.27
33
.008
.203
.0094
.239
19
.042
1.067
.0438
1.11
34
.007
.178
.0086
.218
20
.035
.889
.0375
.953
35
.005
.127
.0078
.198
BWG - Birmingham Wire Gauge for Iron & Steel Wire
USG - US Standard Gauge for Stainless Steel
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