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 6685-01-327-2099
NSN 6220-00-306-1806
NSN 6685-00-221-5750
NSN 5996-00-089-8383
NSN 5990-01-296-8190
NSN 5835-01-297-1909
NSN 6220-00-146-3226
NSN 6105-01-491-1396
NSN 6110-00-758-6780
NSN 5950-00-420-0208
NSN 5925-00-045-5295
NSN 6105-01-442-1250