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 2925-01-295-2017
NSN 6650-01-462-8963
NSN 6645-01-532-9027
NSN 5930-01-382-1738
NSN 6130-01-137-7592
NSN 5925-00-883-1171
NSN 5950-01-642-5062
NSN 6145-00-466-4068
NSN 5999-01-347-5875
NSN 5975-00-516-1771
NSN 6645-00-574-9712
NSN 6220-01-186-2529