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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6220-00-222-5663
NSN 6320-00-676-9387
NSN 6150-01-592-7748
NSN 5935-00-373-3696
NSN 6130-01-106-2182
NSN 6320-01-280-5091
NSN 4140-01-146-5409
NSN 5930-01-290-4105
NSN 5996-01-068-0329
NSN 5905-00-689-1489
NSN 4140-00-106-2659
NSN 5910-01-281-6964