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 6220-01-302-2214
NSN 5965-01-414-2257
NSN 6105-01-248-1702
NSN 5930-01-380-6390
NSN 6320-01-237-9746
NSN 5945-01-432-3216
NSN 5895-01-530-9440
NSN 6620-01-465-5120
NSN 5945-00-462-1789
NSN 5935-00-266-8506
NSN 5945-01-396-4153
NSN 5855-01-338-1718