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# BWG - Birmingham Wire Gauge

Birmingham Wire Gauge - BWG - is also known as Stubs' Wire Gauge used for drill rod and tool steel wire.

A cross reference between BWG, imperial sizes and metric equivalents, in terms of tube wall thickness:

BWG - Birmingham Wire Gauge
Birmingham Wire Gage
BWG
(inches)(mm)
00000 (5/0) 0.500
0000 (4/0) 0.454
000 (3/0) 0.425
00 (2/0) 0.380
0 0.340 8.636
1 0.300 7.620
2 0.284 7.214
3 0.259 6.579
4 0.238 6.045
5 0.220 5.588
6 0.203 5.156
7 0.180 4.572
8 0.165 4.191
9 0.148 3.759
10 0.134 3.404
11 0.120 3.048
12 0.109 2.769
13 0.095 2.413
14 0.083 2.108
15 0.072 1.829
16 0.065 1.651
17 0.058 1.473
18 0.049 1.245
19 0.042 1.067
20 0.035 0.889
21 0.032 0.813
22 0.028 0.711
23 0.025 0.635
24 0.022 0.559
25 0.020 0.508
26 0.018
27 0.016
28 0.014
29 0.013
30 0.012
31 0.010
32 0.009
33 0.008
34 0.007
35 0.005
36 0.004

The wall thickness of a pipe is normally given in decimal parts of an inch rather than as a fraction or gauge number. When gauge number is given for a pipe without reference to a system, Birmingham Wire Gauge - BWG - is implied.

## Related Topics

### • Dimensions

Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.

## Related Documents

### 12 Volt - Wire Gauge vs. Amps

Maximum current (amps) in a 12V electrical circuit vs. size (AWG) and length of wire.

### Pipe vs. Tube

Pipes and tubes are not exactly the same

### Standard Gauges

Standard gauges for wire and sheet - American, Birmingham, Washburn, Music, Stubs ..

### SWG - Standard Wire Gauge

Imperial Standard Wire Gauge used with wire and sheet metal.

### Weight vs. Gauges Chart

Gauge and weight chart for sheet steel, galvanized steel, stainless steel, aluminum and strip & tubing.

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