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 6105-01-051-5901
NSN 6110-00-870-5808
NSN 6645-00-998-7820
NSN 6240-01-590-1347
NSN 5910-01-251-3207
NSN 6150-01-442-7544
NSN 5895-00-100-4877
NSN 6650-01-181-4073
NSN 6220-00-227-0528
NSN 6135-00-262-6807
NSN 6110-00-758-9194
NSN 5950-01-197-7345