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 4140-00-707-5963
NSN 6620-01-485-0556
NSN 5985-01-277-8180
NSN 6105-01-293-5236
NSN 5915-00-199-9554
NSN 4140-00-781-9432
NSN 5935-01-616-5582
NSN 5945-01-226-9435
NSN 6220-00-090-1310
NSN 2925-01-560-4123
NSN 5999-01-371-5284
NSN 5960-01-516-7264