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 6220-00-883-3510
NSN 6150-01-616-3378
NSN 2925-00-132-1280
NSN 6610-01-364-0294
NSN 6650-01-071-1234
NSN 5835-00-244-4956
NSN 5960-01-096-4588
NSN 6145-01-397-6210
NSN 5985-01-023-6016
NSN 5835-01-399-5820
NSN 5895-01-093-5355
NSN 5835-00-138-7807