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 6130-01-423-1383
NSN 5915-01-277-0721
NSN 7035-01-484-8037
NSN 6685-01-360-5202
NSN 5996-00-540-6570
NSN 5950-01-119-4201
NSN 5925-01-131-9776
NSN 5965-01-089-8579
NSN 6145-01-633-4397
NSN 5996-00-499-3691
NSN 5895-00-177-3610
NSN 6610-01-010-4516