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 6145-01-626-8304
NSN 6240-01-265-0960
NSN 6145-01-542-6145
NSN 5925-00-261-6862
NSN 5930-01-011-2246
NSN 5905-00-962-9441
NSN 6610-01-338-6272
NSN 5910-01-535-7126
NSN 6320-01-461-5866
NSN 6320-01-496-4605
NSN 6320-01-192-0332
NSN 6220-00-508-9155