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 5999-01-391-5416
NSN 5835-01-394-3812
NSN 5999-01-151-9821
NSN 5910-00-509-5182
NSN 5925-01-642-4283
NSN 5925-00-504-0996
NSN 2925-00-133-9594
NSN 6105-01-521-2593
NSN 5930-01-097-4086
NSN 6650-01-604-7159
NSN 5950-01-519-2709
NSN 6145-00-621-0225