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 2925-00-428-6349
NSN 6130-01-392-2198
NSN 6685-01-441-8830
NSN 2925-01-069-5324
NSN 5975-01-195-3781
NSN 6145-00-468-8534
NSN 2925-01-213-6622
NSN 7035-00-529-3128
NSN 6650-01-545-8851
NSN 5985-00-413-1251
NSN 6135-01-332-0431
NSN 5960-01-007-6811