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 5998-01-349-6068
NSN 6645-00-955-1240
NSN 6645-01-101-2877
NSN 6220-00-394-5762
NSN 4140-00-830-9515
NSN 4140-00-455-8162
NSN 6145-01-401-3713
NSN 5945-01-130-7694
NSN 5999-00-508-3284
NSN 6130-01-484-7914
NSN 5960-01-364-1318
NSN 6320-00-557-3079