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 5835-00-529-6307
NSN 5935-01-377-5009
NSN 6650-01-480-7754
NSN 6645-00-960-6594
NSN 6240-00-256-6410
NSN 6130-00-007-0586
NSN 6130-01-567-3276
NSN 5910-01-488-5604
NSN 6150-00-482-7299
NSN 6645-00-580-9605
NSN 5925-01-248-0738
NSN 6150-00-110-5400