Gages Used in the US


U.S.S.W.G. - U.S. Steel Wire Gage, also called National Wire Gage (N.W.G.), Washburn and Moen --Gage (W.G.) etc. Used exclusively for steel.
A.W.G. - American Wire Gage, also called Brown and Sharpe Wire Gage (B. & S.). Used --exclusively for non-ferrous metals.
M.S.G. - U.S. Manufacturers' Standard Gage. Used for iron and steel sheets and plates.
U.S.G. - U.S. Standard Gage. Used for stainless steel sheet.
Others - B.W.G. and Stubs Steel Wire Gauge are also in use in the U.S.A.© Tom Martin 2001
No. AWG USSWG MSG USG
7/0
6/0
5/0
4/0
3/0
2/0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22 
-
-
-
46000
40960
36480
32490
28930
25760
22940
20430
18190
16200
14430
12850
11440
10190
09074
08081
07196
06408
05707
05082
04526
04030
03589
03196
02846
02535 
-
-
-
-
-
-
3065
2830
2625
2437
2253
2070
1920
1770
1620
1483
1350
1205
1055
0915
0800
0720
0625
0540
0475
0410
0348
0317
0286 
4783
4484
4185
3886
3587
3288
2990
2690
2541
2391
2242
2092
1943
1793
1644
1495
1345
1196
1046
0897
0747
0673
0598
0538
0478
0418
0359
0329
0299 
5000
4688
4375
4063
3750
3438
3125
2813
2656
2500
2344
2188
2031
1875
1719
1563
1406
1250
1094
0938
0781
0703
0625
0563
0500
0438
0375
0344
0313 
No. AWG USSWG MSG USG
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
00
022570
020100
017900
015940
014200
012640
011260
010030
008928
007950
007080
006304
005615
005000
004453
003965
003531
003145
-
-
-
-
-
-
-
-
-
-
0258
0230
0204
0181
0173
0162
0150
0140
0132
0128
0118
0104
0095
0090
0085
0080
0075
0070
0066
0062
0060
0058
0055
0052
0050
0048
0046
0044
0000
0269
0239
0209
0179
0164
0149
0135
0120
0105
0097
0090
0082
0075
0067
0064
0060
0056
-
-
-
-
-
-
-
-
-
-
-
0281
0250
0219
0188
0172
0156
0141
0125
0109
0102
0094
0086
0078
0070
0066
0063
0059
-
-
-
-
-
-
-
-
-
-
-
Index