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 5965-01-003-2641
NSN 6220-01-038-0418
NSN 6130-01-556-1512
NSN 5998-01-449-4426
NSN 5999-00-092-5102
NSN 4140-00-660-8699
NSN 5960-01-252-8821
NSN 6145-00-812-1353
NSN 5960-01-008-2177
NSN 6610-01-141-7014
NSN 5925-00-557-4530
NSN 5835-01-209-6410