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 6130-01-464-0408
NSN 6685-00-445-1437
NSN 6130-00-574-5419
NSN 5945-01-269-9436
NSN 5905-01-634-0595
NSN 4140-00-471-2789
NSN 6610-00-005-4452
NSN 6145-01-309-6146
NSN 5930-01-449-9444
NSN 6645-01-428-3576
NSN 6620-00-600-9869
NSN 5930-00-321-5373