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 6145-00-502-1828
NSN 5930-00-308-7500
NSN 6620-00-137-0332
NSN 5925-01-200-7255
NSN 5895-00-988-4416
NSN 5895-00-518-4954
NSN 5945-01-202-6177
NSN 7035-01-432-9034
NSN 2925-00-233-5644
NSN 6240-00-197-6819
NSN 6150-00-900-4423
NSN 6150-01-466-7348