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 6130-01-155-6468
NSN 2925-01-250-2731
NSN 6145-00-557-0532
NSN 5905-01-235-5395
NSN 2925-00-233-5644
NSN 5925-01-451-5980
NSN 6620-01-026-0346
NSN 5925-01-608-3822
NSN 2925-01-269-3861
NSN 6110-01-397-2885
NSN 5855-01-260-3693
NSN 5930-01-481-4233