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 6240-01-649-0597
NSN 5960-01-462-7704
NSN 5990-01-189-3201
NSN 5905-00-779-1572
NSN 5930-00-964-9297
NSN 6145-01-486-7959
NSN 5930-01-559-3123
NSN 6105-01-437-3132
NSN 6145-00-233-6010
NSN 5990-01-024-9659
NSN 5985-01-435-5737
NSN 6105-01-125-3792