A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6320-01-585-8468
NSN 5965-01-461-2850
NSN 5855-00-896-4047
NSN 6620-01-469-7828
NSN 5855-01-225-5855
NSN 5960-01-074-9388
NSN 5999-01-119-8510
NSN 5960-01-599-9821
NSN 6620-00-520-1909
NSN 5998-00-890-9173
NSN 6620-01-376-3744
NSN 5985-01-116-6429