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 6130-00-868-9674
NSN 6645-00-025-4771
NSN 5990-00-791-4064
NSN 5945-00-581-9875
NSN 5895-00-755-1673
NSN 6150-01-380-8785
NSN 4140-00-740-2153
NSN 5855-01-130-1501
NSN 5895-00-939-2586
NSN 5990-00-878-6509
NSN 6645-01-233-1131
NSN 5930-01-342-9564