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 5835-01-423-9203
NSN 5999-01-504-9553
NSN 6110-01-366-1666
NSN 4140-00-104-7323
NSN 4140-01-030-7486
NSN 5996-00-648-6580
NSN 5895-00-185-4543
NSN 5935-01-509-4229
NSN 5835-00-856-6744
NSN 6240-00-803-2777
NSN 6145-01-189-5945
NSN 5999-01-218-8606