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 7035-00-946-2642
NSN 5950-00-189-0551
NSN 6110-01-535-7491
NSN 5930-01-514-3890
NSN 5996-01-557-4160
NSN 5965-01-349-6315
NSN 6220-01-421-8601
NSN 5835-01-148-5835
NSN 5915-00-595-8090
NSN 6130-01-588-3561
NSN 6320-00-483-0451
NSN 6620-01-385-4362