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 5920-00-182-9948
NSN 6320-00-853-1920
NSN 4140-00-378-3399
NSN 5990-01-503-0194
NSN 5965-01-423-8543
NSN 6130-01-644-6473
NSN 5950-01-188-7405
NSN 7035-00-349-8571
NSN 5895-01-457-7400
NSN 6110-00-960-4437
NSN 6110-01-194-6630
NSN 7035-01-380-6538