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 6150-01-169-7380
NSN 5895-01-449-1839
NSN 6105-01-634-0322
NSN 6220-01-589-6532
NSN 6105-01-449-1046
NSN 5905-01-301-2783
NSN 5915-01-583-8079
NSN 5935-00-512-7705
NSN 5945-01-422-6187
NSN 5960-01-369-6898
NSN 5915-00-101-2782
NSN 6150-01-164-4907