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 5975-01-146-4796
NSN 6105-00-478-8988
NSN 5950-01-428-7063
NSN 7035-01-590-5229
NSN 5895-00-710-4564
NSN 6150-01-463-2577
NSN 5895-01-399-5282
NSN 6145-01-193-4568
NSN 6110-01-154-7066
NSN 6610-01-572-6625
NSN 6320-01-216-1678
NSN 5950-00-237-7302