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 5915-01-458-5697
NSN 6145-00-038-3369
NSN 5985-00-296-9999
NSN 5996-01-278-7225
NSN 5965-00-653-4782
NSN 5915-01-314-3979
NSN 6220-00-107-1835
NSN 5930-01-357-9151
NSN 6150-01-570-4310
NSN 6150-01-345-4195
NSN 6145-01-565-8605
NSN 6130-01-528-8300