Conform to asa standard b16.5
An item solid or split into halves, having a threaded or unthreaded hole for the purpose of connecting or retaining a pipe, tube, or hose fitting. The face of the flange may be smooth, grooved, or serrated and may be drilled for connecting bolts or studs. If the item is unthreaded, the pipe or tube may be retained by welding, brazing, compression, or the like. Excludes flange, pipe, blind; ferrule, grooved clamp coupling; and adapter (as modified).
Classification: Flanges of iron or nonalloy steel
NSN 7035-01-513-9502
NSN 5930-01-349-3469
NSN 2925-00-720-3948
NSN 2925-01-194-9737
NSN 4140-01-333-2504
NSN 5998-01-142-1471
NSN 5895-01-108-7214
NSN 6240-01-507-7827
NSN 6105-00-988-2471
NSN 5945-01-227-6617
NSN 5975-01-164-1157
NSN 7035-01-518-4418