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 5985-01-589-1300
NSN 5930-00-264-6334
NSN 5895-00-682-8518
NSN 4140-00-974-0128
NSN 5910-01-057-3761
NSN 5935-01-038-7401
NSN 6620-01-431-0706
NSN 7035-00-392-5417
NSN 5998-01-068-4581
NSN 5855-01-407-5761
NSN 5999-01-424-2950
NSN 5990-00-924-0642