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 5905-01-468-6390
NSN 5915-00-847-6737
NSN 5999-01-570-9939
NSN 4140-01-525-7296
NSN 5975-01-064-7232
NSN 5915-00-050-8522
NSN 5835-00-058-0384
NSN 6685-00-133-2288
NSN 5998-00-476-6108
NSN 5895-01-496-4056
NSN 5930-01-578-5810
NSN 5935-01-324-6197