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 6650-00-016-9426
NSN 5985-01-308-6624
NSN 6150-01-428-5825
NSN 6610-01-318-6713
NSN 5910-00-081-2215
NSN 5895-01-188-8820
NSN 5935-01-613-7111
NSN 6145-01-307-0829
NSN 6150-01-034-9798
NSN 6220-00-200-7888
NSN 5895-01-079-8667
NSN 6150-01-389-4289