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 5935-00-834-0585
NSN 5985-00-269-5388
NSN 5975-01-059-0972
NSN 5835-01-481-4204
NSN 6110-00-791-3951
NSN 5998-01-454-0756
NSN 5985-01-270-7632
NSN 5998-01-358-1944
NSN 5905-01-043-3225
NSN 7035-01-287-9817
NSN 6145-00-466-4068
NSN 4140-01-194-3298