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 5965-00-118-8199
NSN 6110-00-950-6065
NSN 6220-01-088-3457
NSN 6145-01-649-7421
NSN 5920-01-424-2060
NSN 6145-00-883-7420
NSN 6105-01-264-1297
NSN 5920-01-478-2668
NSN 5895-01-384-8500
NSN 6105-00-665-8581
NSN 2925-01-320-0965
NSN 5835-00-148-9719