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 5985-01-367-7063
NSN 7035-01-472-5762
NSN 6150-01-373-5809
NSN 5835-01-580-0446
NSN 5920-01-437-6543
NSN 5855-01-261-5495
NSN 5998-01-624-3788
NSN 5835-00-358-4235
NSN 5920-01-512-9897
NSN 5915-01-626-8919
NSN 6105-00-118-8505
NSN 6220-01-163-6380