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