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 6105-00-466-0588
NSN 6135-00-557-8874
NSN 6135-01-226-4071
NSN 7035-01-487-6481
NSN 5965-01-249-6349
NSN 5920-00-256-6589
NSN 5996-00-007-9845
NSN 5975-01-572-5843
NSN 5935-01-512-3371
NSN 6135-00-789-2865
NSN 6145-00-406-4471
NSN 2925-01-422-1542