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 5945-00-151-4623
NSN 6320-00-116-3658
NSN 6320-00-139-1090
NSN 5999-00-343-6628
NSN 5905-01-209-6589
NSN 5930-01-620-5116
NSN 5999-00-724-5552
NSN 6220-01-098-7503
NSN 5925-00-576-8179
NSN 6135-01-268-2152
NSN 5935-01-396-3025
NSN 6220-01-254-6133