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 5996-01-483-1032
NSN 5996-01-481-7694
NSN 6145-01-417-1705
NSN 5999-00-188-7973
NSN 6220-01-250-2376
NSN 2925-00-735-4979
NSN 2925-01-511-5359
NSN 5960-01-084-7379
NSN 4140-00-918-5162
NSN 5915-01-475-2658
NSN 6220-01-629-5068
NSN 6610-01-440-9913