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 5999-01-056-4490
NSN 5910-00-336-1125
NSN 5945-00-344-3255
NSN 5965-00-812-9158
NSN 5945-01-152-1368
NSN 6240-01-499-4900
NSN 6650-01-594-3888
NSN 5960-01-560-8461
NSN 5910-01-124-3651
NSN 2925-01-603-6379
NSN 5985-01-447-7836
NSN 5990-01-537-1124