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 5960-01-281-5437
NSN 6620-00-248-6950
NSN 5996-00-715-0837
NSN 6650-00-863-5657
NSN 6610-01-466-9985
NSN 6135-01-255-9129
NSN 6105-01-241-7525
NSN 5930-01-630-3574
NSN 2925-00-578-4068
NSN 6150-00-542-6679
NSN 5895-01-038-5781
NSN 6240-00-342-9756