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 5960-01-026-9005
NSN 5935-01-150-5953
NSN 6135-01-387-0754
NSN 5990-01-548-5979
NSN 6620-01-361-7595
NSN 6320-00-089-9426
NSN 6610-01-426-5090
NSN 5935-00-105-7724
NSN 5999-00-941-3920
NSN 5925-01-087-7033
NSN 5950-01-139-5169
NSN 6320-01-473-9024