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 5895-00-500-0803
NSN 5950-00-872-0540
NSN 6650-01-227-1632
NSN 5930-01-068-8815
NSN 5998-00-891-5932
NSN 6320-00-977-3930
NSN 5960-01-546-2379
NSN 6320-01-498-4954
NSN 5950-00-813-6759
NSN 6240-00-607-4303
NSN 5996-00-811-8120
NSN 6320-01-453-5152