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 2925-00-964-7128
NSN 6610-00-620-4857
NSN 5945-00-160-9194
NSN 5990-01-480-3278
NSN 5998-00-516-2576
NSN 2925-01-583-0736
NSN 5996-00-067-5219
NSN 5835-01-201-1000
NSN 5975-01-014-4648
NSN 6620-01-588-1876
NSN 7035-00-946-2642
NSN 6645-00-758-4567