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 5910-01-510-3935
NSN 6145-00-011-2390
NSN 6110-00-931-6721
NSN 5915-01-175-5736
NSN 5990-00-911-2376
NSN 5905-00-326-0663
NSN 5920-01-565-4501
NSN 5998-01-031-9650
NSN 6320-01-185-3857
NSN 5935-00-652-2802
NSN 4140-01-563-1276
NSN 6105-00-113-0679