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 5996-01-027-1729
NSN 6110-01-058-1175
NSN 5895-01-593-9373
NSN 5950-01-571-5609
NSN 5965-01-176-9052
NSN 6220-01-634-0660
NSN 5960-01-108-8231
NSN 6110-00-283-9910
NSN 6220-01-091-2470
NSN 6650-01-317-2101
NSN 5905-01-364-1324
NSN 5895-00-835-7084