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 6130-01-441-1624
NSN 6145-01-108-9494
NSN 6105-00-568-8726
NSN 6240-01-068-3491
NSN 5925-01-202-9277
NSN 5999-01-391-4996
NSN 7035-01-537-0408
NSN 6130-01-421-3354
NSN 6685-01-029-5133
NSN 5985-00-929-3616
NSN 5855-01-212-6612
NSN 5910-01-171-7406