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 5990-00-057-1816
NSN 6105-01-461-5088
NSN 7035-00-631-3782
NSN 6610-00-308-9034
NSN 4140-01-604-9652
NSN 6685-00-819-2023
NSN 5960-01-274-7628
NSN 6150-01-618-1653
NSN 5945-01-058-0913
NSN 5960-01-156-1396
NSN 5925-00-119-3333
NSN 5975-01-650-6308