Wire Diameter Cross Reference Chart
| Trade Size | Decimal Diameter | Fractional | Metric | Actual Min./Max. |
|---|---|---|---|---|
| #1 | .162 | – | 4.11mm | .160/.163 |
| 1/0 | .177 | 11/64 | 4.50mm | .174/.177 |
| 2/0 | .192 | 3/16 | 4.88mm | .189/.193 |
| 3/0 | .207 | 13/64 | 5.26mm | .205/.208 |
| 4/0 | .218 | 7/32 | 5.54mm | .210/.213 |
| .234 | .234 | 15/64 | 5.94mm | .234/.238 |
| 6/0 | .281 | 9/31 | 7.14mm | .275/.279 |
| 7/0 | .312 | 5/16 | 7.92mm | .298/.303 |
| 9/0 | .375 | 3/8 | 9.53mm | .364/.369 |
| 11/0 | .437 | 7/16 | 11.10mm | .425/.430 |
| 14/0 | .531 | 17/32 | 13.49mm | .520/.525 |