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 6105-01-354-9170
NSN 6150-01-308-5233
NSN 5985-01-654-1791
NSN 6320-00-445-1187
NSN 6105-01-537-1195
NSN 5998-00-344-5122
NSN 4140-01-492-5268
NSN 4140-01-628-9921
NSN 5998-00-156-7874
NSN 7035-01-260-0804
NSN 6105-00-983-8263
NSN 5998-00-150-1187