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 5925-01-532-4954
NSN 6320-01-015-9856
NSN 6150-01-229-1032
NSN 5835-01-123-4526
NSN 5996-01-333-3419
NSN 5855-01-354-7291
NSN 5925-00-547-7739
NSN 5920-00-689-9722
NSN 5945-01-330-1616
NSN 5998-00-200-5176
NSN 6220-01-540-2161
NSN 5930-01-085-6557