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 5975-01-324-3457
NSN 6130-00-284-1629
NSN 4140-01-250-4202
NSN 5996-00-435-6033
NSN 4140-00-192-9117
NSN 6150-01-279-0133
NSN 5915-00-843-8046
NSN 5950-01-424-5139
NSN 5975-01-028-1319
NSN 6150-01-613-1738
NSN 5895-01-588-9796
NSN 5975-00-083-1433