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 6320-00-242-3300
NSN 5915-01-177-1766
NSN 6105-01-068-3045
NSN 5855-00-337-3679
NSN 5998-01-577-0035
NSN 5960-01-171-1664
NSN 5945-00-842-1105
NSN 4140-00-054-5835
NSN 5965-00-961-1627
NSN 6240-01-206-4809
NSN 6320-01-090-8296
NSN 5835-01-246-0972