Conversion Table from steel gauge number to inches and millimetres.
Gauge |
Imperial |
Metric |
0 |
0.324" |
8.230mm |
1 |
0.300" |
7.620mm |
2 |
0.276" |
7.010mm |
3 |
0.252" |
6.401mm |
4 |
0.232" |
5.893mm |
5 |
0.212" |
5.385mm |
6 |
0.192" |
4.877mm |
7 |
0.176" |
4.470mm |
8 |
0.160" |
4.064mm |
9 |
0.144" |
3.658mm |
10* (3.0mm) |
0.128" |
3.251mm |
11 |
0.116" |
2.946mm |
12* (2.5mm) |
0.104" |
2.642mm |
13 |
0.092" |
2.337mm |
14* (2.0mm) |
0.080" |
2.032mm |
15 |
0.072" |
1.829mm |
16* (1.5mm) |
0.064" |
1.626mm |
17 |
0.056" |
1.422mm |
18* (1.2mm) |
0.048" |
1.219mm |
19 |
0.040" |
1.016mm |
20* (1.0mm) |
0.036" |
0.914mm |
21 |
0.032" |
0.813mm |
22 |
0.028" |
0.711mm |
23 |
0.024" |
0.610mm |
25 |
0.020" |
0.508mm |
26 |
0.018" |
0.457mm |
27 |
0.0164" |
0.4166mm |
28 |
0.0148" |
0.3759mm |
29 |
0.0136" |
0.3454mm |
30 |
0.0124" |
0.3150mm |
* We have standardised our Rivet Bush range of fasteners to suit metric panel thicknesses.
Although parts are still specified to suit a gauge size, an 18swg bush will be ok when installed in either a 18swg or 1.2mm panel for example. Give us a call if further explanation is required.