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 5945-01-044-9004
NSN 6645-01-079-7919
NSN 4140-00-299-6328
NSN 5855-00-466-2309
NSN 5950-00-016-7418
NSN 5925-01-139-0495
NSN 5925-01-469-6068
NSN 6610-01-608-2159
NSN 6150-01-406-5844
NSN 5998-01-629-7615
NSN 6320-00-261-9136
NSN 5855-01-513-5684