Thd int on flange end 2.125-12unj-3b lh; flight safety critical
An adapter having a flange connection on one end designed to connect with another flange connection or a compression type mounting pad. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a flange or flange fitting to boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like.
Classification: Flanges of iron or nonalloy steel
NSN 6620-00-337-5610
NSN 5965-01-334-9275
NSN 6320-01-123-6814
NSN 5935-01-006-3744
NSN 6610-01-121-4925
NSN 7035-00-020-2227
NSN 7035-00-205-1932
NSN 6645-01-045-4088
NSN 5975-00-204-9190
NSN 6130-01-060-8053
NSN 5855-01-302-5493
NSN 5945-01-369-8948