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 5998-01-095-8632
NSN 5999-01-608-4318
NSN 5920-01-539-6045
NSN 5855-00-885-8452
NSN 5915-00-753-7553
NSN 5910-01-044-2263
NSN 5998-01-100-3624
NSN 5935-01-629-5498
NSN 6620-01-477-0123
NSN 6105-01-336-1891
NSN 6685-01-593-7085
NSN 5998-00-370-0650