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 5935-01-648-7797
NSN 6645-01-626-2494
NSN 5915-01-500-1826
NSN 6645-00-464-6375
NSN 6240-01-175-3877
NSN 5920-01-492-9173
NSN 6150-00-273-9014
NSN 5950-01-211-0138
NSN 5950-01-359-4854
NSN 5965-01-376-1012
NSN 6240-01-647-0790
NSN 5999-01-090-0664