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 5960-01-498-0572
NSN 5950-00-448-1578
NSN 5975-01-534-2460
NSN 5985-00-271-9502
NSN 5950-01-069-1324
NSN 5895-01-240-7332
NSN 6620-01-034-7636
NSN 5905-00-691-0226
NSN 5998-00-284-3804
NSN 6110-01-485-0276
NSN 7035-01-145-5059
NSN 6150-00-984-5362