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 5930-00-820-3119
NSN 5910-00-877-3773
NSN 6620-01-388-8955
NSN 6645-00-451-6462
NSN 5965-01-258-5662
NSN 5910-01-253-4863
NSN 5920-01-230-0736
NSN 5960-01-215-0992
NSN 5930-00-122-0055
NSN 5985-01-302-2321
NSN 4140-01-274-9320
NSN 5996-00-222-4930