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 5895-00-232-9451
NSN 6130-00-107-5303
NSN 5999-01-623-7866
NSN 5905-01-274-5547
NSN 5930-01-597-7142
NSN 6105-00-907-3265
NSN 5945-00-351-8782
NSN 2925-01-618-5706
NSN 6150-01-267-9546
NSN 5950-00-526-0658
NSN 4140-01-115-7377
NSN 5950-01-132-8177