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 5985-00-424-4416
NSN 6645-01-129-8211
NSN 6130-01-331-0264
NSN 5895-01-325-2581
NSN 6145-00-199-5093
NSN 5975-01-551-8663
NSN 6130-01-154-9825
NSN 5930-01-383-8119
NSN 5910-00-803-9881
NSN 5915-01-321-9996
NSN 5935-01-431-9040
NSN 5999-00-476-9991