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 5925-00-886-8041
NSN 5998-01-488-4919
NSN 5945-01-341-9162
NSN 7035-01-589-6720
NSN 5910-00-274-6491
NSN 6650-00-751-9958
NSN 7035-01-600-0777
NSN 5915-01-446-6930
NSN 5965-01-396-0021
NSN 5975-00-201-6306
NSN 5910-01-347-0260
NSN 5965-01-377-3587