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 5895-00-209-2554
NSN 6220-00-071-4598
NSN 5960-01-142-1995
NSN 6320-01-098-2503
NSN 6105-00-632-4848
NSN 5945-01-445-5537
NSN 6145-01-599-9935
NSN 5920-01-576-0181
NSN 5985-01-366-7950
NSN 6150-00-908-0782
NSN 2925-01-487-0886
NSN 6320-01-308-0009