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 6240-01-475-1824
NSN 5975-00-572-9118
NSN 5985-01-657-2421
NSN 5950-00-717-7134
NSN 6220-00-790-5431
NSN 5945-01-329-8755
NSN 5905-01-485-0234
NSN 2925-01-048-4006
NSN 6650-01-540-5157
NSN 5998-01-344-6166
NSN 6105-01-446-0732
NSN 6105-01-304-7022