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 5999-01-192-6479
NSN 2925-00-144-6405
NSN 5990-01-485-0260
NSN 6110-01-152-2547
NSN 5935-01-033-3861
NSN 2925-01-149-2865
NSN 5999-00-188-7973
NSN 6145-00-269-4271
NSN 6650-00-917-0436
NSN 5910-00-378-0073
NSN 6685-00-960-7667
NSN 5895-01-403-2793