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 5925-00-244-7418
NSN 5960-01-269-6045
NSN 5935-00-790-7092
NSN 2925-01-538-1343
NSN 5905-01-374-3268
NSN 6240-00-175-9104
NSN 5975-01-415-5771
NSN 6645-01-559-4577
NSN 5998-00-981-1939
NSN 5985-01-039-5419
NSN 5835-01-588-6533
NSN 6240-01-605-8096