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 5985-00-914-6299
NSN 5910-01-518-4164
NSN 6645-01-450-5175
NSN 5965-00-351-7460
NSN 5999-01-503-4816
NSN 6150-00-177-3184
NSN 6145-00-809-2699
NSN 5835-00-165-3069
NSN 5905-01-324-3875
NSN 4140-01-314-4013
NSN 5910-00-137-0849
NSN 6110-01-422-4713