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 5965-01-282-6085
NSN 5950-00-947-1454
NSN 6610-01-649-5326
NSN 5999-01-322-7980
NSN 6105-01-063-2158
NSN 5920-00-780-5567
NSN 6240-00-450-8889
NSN 5855-00-134-0569
NSN 5935-01-593-4209
NSN 5905-01-457-3009
NSN 6320-01-386-3491
NSN 6105-01-653-2867