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 6610-00-061-7882
NSN 5996-01-013-8824
NSN 6650-01-052-2143
NSN 7035-00-215-3272
NSN 6220-01-065-1387
NSN 5950-01-307-3451
NSN 5945-01-381-6300
NSN 5975-01-062-2174
NSN 6685-01-027-1168
NSN 5999-01-094-5956
NSN 6145-01-215-9853
NSN 6320-01-458-9567