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 6610-01-046-1117
NSN 6130-00-786-1775
NSN 5905-00-592-8084
NSN 5965-00-815-2525
NSN 5935-01-484-5167
NSN 5920-01-399-8740
NSN 6645-01-425-1673
NSN 6610-00-476-4402
NSN 5996-01-155-2467
NSN 6110-01-463-3155
NSN 6220-00-141-5322
NSN 5950-01-222-0808