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 6105-00-272-7481
NSN 5925-01-516-2823
NSN 7035-00-570-4100
NSN 5835-01-519-3834
NSN 5895-01-566-1928
NSN 5925-00-265-5807
NSN 5925-00-871-9009
NSN 6685-00-160-6390
NSN 5835-01-231-4994
NSN 5975-00-594-8857
NSN 6610-01-353-2241
NSN 4140-00-751-1694