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 6320-01-513-9166
NSN 5915-00-799-2975
NSN 5996-00-417-9706
NSN 6150-01-328-8604
NSN 6110-01-211-9078
NSN 2925-01-071-9291
NSN 7035-01-144-1868
NSN 5935-01-508-4394
NSN 5930-01-417-3003
NSN 6620-00-506-0112
NSN 6650-00-056-1581
NSN 4140-01-358-7889