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 5996-00-121-2914
NSN 6610-01-029-8749
NSN 5996-01-297-9385
NSN 4140-01-426-8428
NSN 5999-01-341-7039
NSN 6105-01-431-6723
NSN 5915-01-468-5793
NSN 4140-01-351-3892
NSN 5920-00-811-4405
NSN 6240-01-343-9367
NSN 6105-00-117-9189
NSN 5999-01-293-3329