... Diameter)BWGInchmmTolerance(mm)3/8"10mm±1.00.7mm - 1452' - 1M27, 26, 25, 24, 231/2"13mm±1.50.7mm - 952' - ... 9mm - 401' - 2M23, 22, 21, 20, 19, 181-1/2"40mm±5.01.0mm - 451' - 2M23, 22, 21, 20, ... .2mm - 401' - 2M23, 22, 21, 20, 19, 182-1/2"65mm±7.01.0mm - 301' - 2M21, 20, 19, 183 ... 2M19, 18, 17, 16 Note:1.) The above tolerance comply with standard EN10223-2:1997;2.) Minimum Galvanization is only for typical ...