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 5920-01-264-3034
NSN 6150-00-605-0337
NSN 5960-01-275-5896
NSN 5998-01-634-0604
NSN 6320-00-400-8042
NSN 6620-01-253-0374
NSN 5910-00-144-4383
NSN 6610-01-353-0660
NSN 5910-01-492-5124
NSN 6150-01-512-6017
NSN 6110-01-182-2911
NSN 5930-00-263-7854