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 5950-01-589-4146
NSN 5910-01-082-7804
NSN 5960-01-342-1961
NSN 6145-01-512-2308
NSN 6110-00-744-1301
NSN 6220-01-417-2974
NSN 6150-00-340-3203
NSN 6110-01-281-7527
NSN 5990-00-288-1820
NSN 5835-01-408-6529
NSN 6105-01-521-2593
NSN 7035-00-096-9986