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 6105-01-179-9090
NSN 5996-01-241-1843
NSN 5960-00-267-9298
NSN 5945-00-132-5139
NSN 2925-01-625-6841
NSN 5950-01-257-4232
NSN 5835-01-498-9410
NSN 6145-01-651-5096
NSN 5910-01-492-9892
NSN 5915-01-336-0308
NSN 6150-01-544-7312
NSN 6110-01-649-2284