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 5935-01-565-3942
NSN 6220-01-462-6085
NSN 2925-00-180-2532
NSN 5990-01-066-5227
NSN 5985-01-364-9609
NSN 6610-00-149-1534
NSN 7035-01-038-9970
NSN 6620-00-763-2168
NSN 6320-00-538-2132
NSN 5915-00-579-0618
NSN 6645-01-161-3689
NSN 5975-01-296-0644