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 5945-01-285-7740
NSN 5910-01-610-7288
NSN 6650-00-963-1692
NSN 5950-00-613-6700
NSN 5935-00-279-6952
NSN 5999-01-421-2692
NSN 5975-00-636-4910
NSN 5945-01-038-2021
NSN 5920-00-127-9992
NSN 6240-00-635-9953
NSN 5930-01-484-9116
NSN 5950-01-634-0677