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 5835-00-973-6828
NSN 5910-01-108-6830
NSN 5950-01-459-7961
NSN 6650-01-158-6888
NSN 6620-00-464-6105
NSN 6110-00-969-4030
NSN 5998-00-121-4173
NSN 6650-00-929-0084
NSN 5855-01-023-3727
NSN 5925-01-591-3580
NSN 5990-00-964-6422
NSN 5998-01-565-8604