Wire Gauges
|
| No. of Wire Gauge |
Steel Wire Gauge (US)* |
British Standard
Wire Gauge
(Imperial Wire Gauge) |
|
7/0
|
0.4900
|
0.5000
|
|
6/0
|
0.4615
|
0.4640
|
|
5/0
|
0.4305
|
0.4320
|
|
4/0
|
0.3938
|
0.4000
|
|
3/0
|
0.3625
|
0.3720
|
|
2/0
|
0.3310
|
0.3480
|
|
1/0
|
0.3065
|
0.3240
|
|
1
|
0.2830
|
0.3000
|
|
2
|
0.2625
|
0.2760
|
|
3
|
0.2437
|
0.2520
|
|
4
|
0.2253
|
0.2320
|
|
5
|
0.2070
|
0.2120
|
|
6
|
0.1920
|
0.1920
|
|
7
|
0.1770
|
0.1760
|
|
8
|
0.1620
|
0.1600
|
|
9
|
0.1483
|
0.1440
|
|
10
|
0.1350
|
0.1280
|
|
11
|
0.1205
|
0.1160
|
|
12
|
0.1055
|
0.1040
|
|
13
|
0.0915
|
0.0920
|
|
14
|
0.0800
|
0.0800
|
|
15
|
0.0720
|
0.0720
|
|
16
|
0.0625
|
0.0640
|
|
17
|
0.0540
|
0.0560
|
|
18
|
0.0475
|
0.0480
|
|
19
|
0.0410
|
0.0400
|
|
20
|
0.0348
|
0.0360
|
|
21
|
0.0318
|
0.0320
|
|
22
|
0.0286
|
0.0280
|
|
23
|
0.0258
|
0.0240
|
|
24
|
0.0230
|
0.0220
|
|
25
|
0.0204
|
0.0200
|
|
26
|
0.0181
|
0.0180
|
|
27
|
0.0173
|
0.0164
|
|
28
|
0.0162
|
0.0149
|
|
29
|
0.0150
|
0.0136
|
|
30
|
0.0140
|
0.0124
|
|
31
|
0.0132
|
0.0116
|
|
32
|
0.0128
|
0.0108
|
|
33
|
0.0118
|
0.0100
|
|
34
|
0.0104
|
0.0092
|
|
35
|
0.0095
|
0.0084
|
|
36
|
0.0090
|
0.0076
|
|
37
|
0.0085
|
0.0068
|
|
38
|
0.0080
|
0.0060
|
|
39
|
0.0075
|
0.0052
|
|
40
|
0.0070
|
0.0048
|
|
41
|
0.0066
|
0.0044
|
|
42
|
0.0062
|
0.0040
|
|
43
|
0.0060
|
0.0036
|
|
44
|
0.0058
|
0.0032
|
|
45
|
0.0055
|
0.0028
|
|
46
|
0.0052
|
0.0024
|
|
47
|
0.0050
|
0.0020
|
|
48
|
0.0048
|
0.0016
|
|
49
|
0.0046
|
0.0012
|
|
50
|
0.0044
|
0.0010
|
* Also known as Wasburn and Moen,
American Steel and Wire Co. and Roebling Wire Gauges. A greater selection of sizes is
avaiable and is specified by what are kown as split gauge numbers. They can be recognized
by 1/2 fractions which follow the gauge number; i.e., 4-1/2. The decimal equivalents of
split gauge numbers are in the Steel Products Manual entitled: Wire and Rods, Carbon
Steel published by the American Iron and steel Institute, Washington, DC.