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 6130-01-025-1540
NSN 5975-01-339-7183
NSN 6135-00-351-8606
NSN 5965-01-657-9805
NSN 5920-01-223-3734
NSN 6240-01-166-1807
NSN 4140-01-542-1614
NSN 5935-01-009-7650
NSN 5998-01-171-3074
NSN 5835-00-554-0399
NSN 6130-01-460-5114
NSN 5990-01-517-7848