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 2925-01-253-6006
NSN 5925-01-115-4405
NSN 5855-01-218-3735
NSN 6150-00-474-1311
NSN 5855-01-154-3871
NSN 6620-01-382-4744
NSN 5910-01-514-3343
NSN 5930-01-535-8234
NSN 5998-01-234-7838
NSN 5965-00-762-0630
NSN 6645-01-594-6407
NSN 5855-00-198-3197