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 6105-01-502-7014
NSN 6620-00-379-2856
NSN 6685-01-392-0602
NSN 6135-01-377-3862
NSN 6610-00-391-7888
NSN 5990-01-571-7468
NSN 5915-00-553-8755
NSN 5990-00-512-6367
NSN 5996-00-999-0157
NSN 5975-00-114-2158
NSN 6150-00-808-9221
NSN 5855-00-361-0167