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 6105-00-082-3210
NSN 6105-01-659-0465
NSN 6130-01-578-5880
NSN 5930-01-381-7940
NSN 5945-00-553-5210
NSN 7035-00-481-5182
NSN 5835-00-859-8330
NSN 5965-01-241-0553
NSN 5960-01-093-6981
NSN 5945-01-068-6752
NSN 5960-01-466-1994
NSN 5998-00-716-0996