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 6610-01-144-4228
NSN 6610-00-931-3655
NSN 5855-01-614-1661
NSN 6220-01-208-1640
NSN 6105-01-254-2722
NSN 5960-01-205-7425
NSN 5920-01-101-5852
NSN 2925-01-295-9337
NSN 5965-01-232-6509
NSN 6150-01-076-4811
NSN 6220-01-399-3030
NSN 6685-01-389-4130