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 7035-00-631-3782
NSN 5960-01-461-9284
NSN 5930-01-420-5450
NSN 5998-01-411-5485
NSN 5855-00-631-4565
NSN 5965-01-508-6053
NSN 6240-01-200-7937
NSN 7035-00-215-3272
NSN 5910-01-362-0722
NSN 6145-00-810-6131
NSN 5965-01-342-2865
NSN 5895-00-106-6120