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 5960-01-226-7297
NSN 7035-00-565-9623
NSN 6610-01-321-6904
NSN 5920-00-371-1191
NSN 6685-00-078-0098
NSN 6650-01-562-5883
NSN 6685-01-391-5316
NSN 6645-01-618-1983
NSN 5945-00-233-7426
NSN 5915-00-261-9970
NSN 5835-00-698-9824
NSN 5950-01-061-9384