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 6135-01-646-5986
NSN 5895-00-139-6016
NSN 5935-01-135-6508
NSN 6105-01-591-9756
NSN 5965-00-387-6880
NSN 6685-00-181-9596
NSN 2925-01-580-1527
NSN 5895-01-129-2131
NSN 5895-00-726-4831
NSN 4140-01-653-5785
NSN 6150-00-162-5503
NSN 5895-01-185-6520