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 2925-00-446-6453
NSN 4140-01-483-5693
NSN 6105-01-391-7722
NSN 6130-01-248-4057
NSN 7035-01-550-0439
NSN 5975-00-483-9819
NSN 6130-01-459-8018
NSN 6130-01-604-3392
NSN 5905-01-535-7828
NSN 5925-00-071-9844
NSN 6130-01-298-7971
NSN 6650-01-328-8363