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 2925-01-236-3547
NSN 6130-01-302-6769
NSN 5905-00-585-5831
NSN 6110-01-131-4001
NSN 6620-01-140-0968
NSN 5998-01-145-3492
NSN 5910-01-624-2824
NSN 6620-00-369-9481
NSN 5855-00-466-2309
NSN 6105-01-429-8546
NSN 6645-01-046-8849
NSN 5915-01-542-3452