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 6145-01-088-2759
NSN 7035-01-528-7095
NSN 6130-00-633-6187
NSN 2925-01-196-6187
NSN 5975-01-415-4283
NSN 5950-01-553-5950
NSN 5905-00-378-0312
NSN 6145-01-423-0382
NSN 4140-01-320-7527
NSN 6320-01-050-1290
NSN 5985-00-270-3653
NSN 6150-01-209-0089