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 5920-00-878-0790
NSN 5855-00-004-0904
NSN 6105-00-639-6857
NSN 6685-00-083-6285
NSN 5835-01-276-4621
NSN 6145-01-208-3678
NSN 6105-01-593-4395
NSN 5835-01-150-6084
NSN 6110-01-016-0455
NSN 5915-01-601-0645
NSN 5925-01-141-5429
NSN 6110-01-571-0374