An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 2925-01-116-6838
NSN 6685-01-575-7335
NSN 5996-01-341-9130
NSN 6150-01-334-0818
NSN 5910-00-220-3915
NSN 2925-01-568-3705
NSN 5915-01-212-4492
NSN 6685-00-218-1229
NSN 5965-00-021-5620
NSN 6220-00-149-0977
NSN 5945-00-102-3987
NSN 4140-01-549-7195