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 5905-01-397-8577
NSN 6620-01-084-5112
NSN 5950-00-929-1120
NSN 6685-01-060-1583
NSN 5930-00-816-8825
NSN 7035-01-045-3502
NSN 6610-00-176-5486
NSN 6130-00-938-9361
NSN 5999-00-900-9114
NSN 6105-01-279-5107
NSN 5960-01-531-4845
NSN 5960-00-071-0698