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 5835-00-083-6557
NSN 6130-01-212-9912
NSN 6130-00-218-1363
NSN 6130-01-205-0395
NSN 6240-00-677-0305
NSN 5965-01-147-5847
NSN 5975-01-138-7413
NSN 6105-01-461-3213
NSN 5895-01-538-1703
NSN 6645-00-674-9728
NSN 6150-01-634-0575
NSN 6145-00-075-4620