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 5999-01-556-1031
NSN 5996-01-227-4496
NSN 6320-00-456-0836
NSN 5905-01-103-0678
NSN 5996-01-067-8303
NSN 4140-01-495-3768
NSN 6610-01-282-3225
NSN 6105-01-285-4205
NSN 5950-00-101-2640
NSN 5835-01-416-6455
NSN 5930-01-605-3267
NSN 6135-00-377-9165