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 6220-01-584-6947
NSN 5905-01-629-2295
NSN 6150-00-088-8827
NSN 6145-01-077-3242
NSN 5945-01-541-0200
NSN 5975-01-270-1429
NSN 6105-01-074-4360
NSN 6685-00-919-3784
NSN 5950-01-061-3357
NSN 5855-01-246-4274
NSN 6150-01-147-4604
NSN 6145-01-099-0051