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 5910-00-683-8276
NSN 6685-01-577-0799
NSN 6145-00-194-2693
NSN 5920-00-294-0753
NSN 6240-01-042-3650
NSN 5950-01-073-4702
NSN 6150-01-202-8214
NSN 6135-01-100-3593
NSN 6610-01-524-0636
NSN 6150-00-265-7799
NSN 5915-01-093-7571
NSN 5935-01-354-6106