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 5855-01-267-2751
NSN 6220-00-008-5582
NSN 6320-01-296-3181
NSN 5990-01-392-5682
NSN 7035-01-154-0796
NSN 6645-00-914-2820
NSN 5999-00-503-8028
NSN 7035-00-020-2227
NSN 7035-01-302-5359
NSN 5930-01-400-6126
NSN 5855-01-184-8089
NSN 6645-01-113-2525