Anvil standard and extra heavy cast iron threaded fittings are manufactured in accordance with ASME-B16.4 (except plugs and bushings, ASME B16.14). Dimensions also conform to Federal Specifications, WW-P-501 (except plugs and bushings WW-P-471). Cast iron threaded fittings are available in both black and galvanized. Anvil's Fig. 385 Face Bushing is offered in malleable iron and cast iron.