See galvanized steel gauge thickness and tolerance, in inches and millimeters. Nominal thickness includes the zinc coating.
Caution
- Gauge thickness varies by material type
- Odd number gauges (e.g. 3, 15, 27) are often only available through large mill runs
| Gauge | Imperial (inches) | Metric (mm) | ||
|---|---|---|---|---|
| Thickness | Tolerance | Thickness | Tolerance | |
| 3 | – | – | – | – |
| 4 | – | – | – | – |
| 5 | – | – | – | – |
| 6 | – | – | – | – |
| 7 | – | – | – | – |
| 8 | – | – | – | – |
| 9 | 0.1532 | ±.009 | 3.891 | ±0.229 |
| 10 | 0.1382 | ±.009 | 3.510 | ±0.229 |
| 11 | 0.1233 | ±.009 | 3.132 | ±0.229 |
| 12 | 0.1084 | ±.009 | 2.753 | ±0.229 |
| 13 | 0.0934 | ±.008 | 2.372 | ±0.203 |
| 14 | 0.0785 | ±.008 | 1.994 | ±0.203 |
| 15 | 0.0710 | ±.006 | 1.803 | ±0.152 |
| 16 | 0.0635 | ±.006 | 1.613 | ±0.152 |
| 17 | 0.0575 | ±.005 | 1.460 | ±0.127 |
| 18 | 0.0516 | ±.005 | 1.311 | ±0.127 |
| 19 | 0.0456 | ±.005 | 1.158 | ±0.127 |
| 20 | 0.0396 | ±.004 | 1.006 | ±0.102 |
| 21 | 0.0366 | ±.004 | 0.930 | ±0.102 |
| 22 | 0.0336 | ±.004 | 0.853 | ±0.102 |
| 23 | 0.0306 | ±.004 | 0.777 | ±0.102 |
| 24 | 0.0276 | ±.004 | 0.701 | ±0.102 |
| 25 | 0.0247 | ±.004 | 0.627 | ±0.102 |
| 26 | 0.0217 | ±.003 | 0.551 | ±0.076 |
| 27 | 0.0202 | ±.003 | 0.513 | ±0.076 |
| 28 | 0.0187 | ±.003 | 0.475 | ±0.076 |
| 29 | 0.0172 | ±.003 | 0.437 | ±0.076 |
| 30 | 0.0157 | ±.003 | 0.399 | ±0.076 |
| 31 | 0.0142 | – | 0.361 | – |
| 32 | 0.0134 | – | 0.340 | – |
| 33 | – | – | – | – |
| 34 | – | – | – | – |
| 35 | – | – | – | – |
| 36 | – | – | – | – |
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