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 6105-01-044-5907
NSN 6240-00-243-8336
NSN 6320-01-378-6191
NSN 5855-00-149-0766
NSN 5930-01-471-2273
NSN 6105-01-508-3471
NSN 6320-01-229-2264
NSN 5855-00-911-1370
NSN 5835-01-416-6449
NSN 5990-00-371-6590
NSN 6240-01-468-6408
NSN 5930-01-464-3106