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 5960-00-312-7868
NSN 5910-01-305-5189
NSN 5895-00-951-6944
NSN 5945-01-423-7776
NSN 5930-01-428-6770
NSN 5910-01-155-9451
NSN 6320-00-593-0379
NSN 5930-01-601-9873
NSN 5990-00-622-1010
NSN 5915-01-561-2476
NSN 6240-00-146-9322
NSN 6110-00-155-8055