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 6620-01-323-0664
NSN 5905-00-341-6516
NSN 5996-01-381-1316
NSN 6130-01-310-7447
NSN 6150-01-545-1011
NSN 6145-00-010-1425
NSN 5895-01-557-5365
NSN 6145-00-985-3284
NSN 6145-01-647-4096
NSN 6130-00-205-1714
NSN 6130-00-348-1410
NSN 5950-00-772-6668