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 6105-01-634-0322
NSN 6240-01-327-3239
NSN 5910-00-244-4209
NSN 5905-00-298-1951
NSN 6645-00-917-6225
NSN 5895-00-257-4875
NSN 5855-01-410-8979
NSN 5910-01-608-8972
NSN 7035-00-009-8705
NSN 5945-01-562-6106
NSN 5855-01-453-1549
NSN 5925-00-100-0102