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 6110-01-242-9573
NSN 6145-01-288-9482
NSN 6130-01-501-3961
NSN 5855-00-862-3345
NSN 6110-01-039-5444
NSN 6135-00-112-8637
NSN 6135-00-542-6728
NSN 5990-00-964-6422
NSN 6685-01-202-5338
NSN 5998-01-469-7334
NSN 5835-01-626-9603
NSN 5985-00-163-6325