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 5925-01-088-0654
NSN 5975-00-123-6441
NSN 6620-00-273-8735
NSN 6145-01-095-4139
NSN 6220-01-352-7833
NSN 5925-01-526-9074
NSN 5935-01-227-1940
NSN 6145-00-135-1436
NSN 5998-01-550-9495
NSN 5925-01-255-4283
NSN 6130-00-892-3555
NSN 5975-01-429-8205