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 5915-00-985-0867
NSN 5905-01-094-2859
NSN 6240-01-633-9357
NSN 5998-01-344-3125
NSN 6145-00-153-2818
NSN 5855-00-797-8217
NSN 6610-00-907-0484
NSN 5915-01-469-8095
NSN 5999-01-214-0631
NSN 6150-01-012-0528
NSN 5990-00-633-7634
NSN 6135-00-228-8140