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 5905-00-384-0449
NSN 6220-00-353-0942
NSN 6150-00-693-4818
NSN 6110-01-558-5200
NSN 6150-01-352-5803
NSN 5985-01-603-9857
NSN 5945-01-391-3745
NSN 2925-01-629-9416
NSN 5910-00-283-8067
NSN 6145-01-563-5883
NSN 5895-01-080-0134
NSN 6110-01-400-4207