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 6130-01-256-1035
NSN 6105-01-152-2800
NSN 5835-01-142-9233
NSN 6105-00-291-0154
NSN 5930-00-997-5805
NSN 5999-00-763-2366
NSN 5915-00-804-3026
NSN 2925-01-305-1370
NSN 6650-01-290-4001
NSN 6320-01-089-9086
NSN 5935-01-578-5745
NSN 5996-00-201-6921