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 5930-00-905-5349
NSN 2925-00-860-3652
NSN 6685-01-634-0611
NSN 5895-01-567-6573
NSN 7035-01-305-1950
NSN 5920-00-125-1316
NSN 5920-01-422-0193
NSN 6320-01-160-7757
NSN 6685-00-071-1072
NSN 5910-00-535-2811
NSN 5975-01-254-9244
NSN 5975-01-434-3154