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 5950-00-450-5326
NSN 2925-01-359-4027
NSN 6610-00-076-2941
NSN 6220-01-171-8383
NSN 5950-00-187-2893
NSN 5905-00-141-9337
NSN 4140-00-109-5137
NSN 5965-00-106-3195
NSN 5996-00-179-9583
NSN 6105-00-670-2626
NSN 6320-00-925-0558
NSN 2925-01-602-8156