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 7035-00-483-6617
NSN 6650-01-351-4544
NSN 5960-01-021-3277
NSN 6685-01-626-6660
NSN 5945-01-457-0643
NSN 5910-01-235-8100
NSN 5925-01-173-9924
NSN 5935-01-542-6341
NSN 5855-00-962-5792
NSN 6610-01-062-9994
NSN 5930-01-435-5806
NSN 5935-00-598-6126