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 5910-00-112-2505
NSN 5895-00-929-3588
NSN 6645-01-040-5233
NSN 6645-01-162-8023
NSN 6145-00-125-7799
NSN 5920-01-620-1073
NSN 6105-01-585-3556
NSN 5950-01-172-4215
NSN 6135-01-142-2417
NSN 5930-00-450-6205
NSN 4140-00-282-9759
NSN 6110-00-156-6468