Radnor 64003968 Cga-320 Brass Carbon Dioxide Regulator Nut

CGA-320 Regulator Nut. All Radnor fittings are manufactured to CGA-standards. In addition to CGA-numbers, many popular fittings commonly are refered to as A-size, B-size, C-size and D-size. These letter designations are included in the product discriptions.