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 6150-01-041-6976
NSN 5855-00-327-2112
NSN 6130-01-375-4704
NSN 5935-01-345-5656
NSN 5855-00-135-9064
NSN 5855-01-328-5913
NSN 5985-01-385-9880
NSN 7035-01-012-5807
NSN 6135-00-497-0491
NSN 5905-00-366-7578
NSN 5905-00-555-1899
NSN 5925-01-337-4928