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 5910-00-388-6737
NSN 5915-00-274-2282
NSN 4140-00-256-1471
NSN 6135-00-484-8556
NSN 5999-01-333-2546
NSN 6685-00-801-0036
NSN 7035-01-379-3795
NSN 6620-00-557-7008
NSN 5930-00-547-9391
NSN 5935-01-066-3834
NSN 6130-00-655-3084
NSN