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 5835-01-130-8258
NSN 5920-00-059-4659
NSN 6220-01-350-3108
NSN 5999-01-163-9144
NSN 7035-01-163-3667
NSN 6650-01-364-0299
NSN 7035-01-641-4634
NSN 5935-00-489-2603
NSN 5999-00-062-0218
NSN 5998-01-391-0696
NSN 6150-01-535-6663
NSN 6145-00-334-4115