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 5960-00-529-2704
NSN 5960-01-142-1995
NSN 6105-01-407-4377
NSN 2925-01-330-2988
NSN 5930-01-464-3465
NSN 6130-01-462-6084
NSN 5835-00-491-3834
NSN 6610-01-070-7034
NSN 5895-01-027-7395
NSN 5935-01-355-8132
NSN 5835-01-447-2544
NSN 7035-01-354-4318