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 7035-01-145-5059
NSN 6320-00-450-7014
NSN 2925-00-933-0200
NSN 5998-01-116-2577
NSN 7035-00-188-6674
NSN 5835-01-099-1514
NSN 5990-01-481-8441
NSN 5915-00-724-3576
NSN 6645-00-342-5956
NSN 5975-01-624-5975
NSN 5998-00-810-0186
NSN 5915-01-240-3247