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 5910-00-452-3896
NSN 5915-01-546-7335
NSN 6130-00-419-1120
NSN 6650-01-338-2676
NSN 5855-01-035-2866
NSN 5999-00-012-5930
NSN 5855-00-089-3974
NSN 6150-00-390-3422
NSN 5998-01-367-3653
NSN 5990-01-240-7288
NSN 5998-01-479-2423
NSN 6220-01-391-6084