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 6105-00-004-4496
NSN 5985-00-552-9170
NSN 4140-01-621-4893
NSN 2925-00-134-4827
NSN 6685-01-211-5278
NSN 5855-00-455-6070
NSN 5945-01-150-3844
NSN 5895-01-383-0240
NSN 6110-01-526-3516
NSN 6685-01-596-4877
NSN 5910-01-490-6288
NSN 5945-00-290-1779