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 5925-00-888-5444
NSN 5998-00-255-9921
NSN 6650-01-444-2152
NSN 6130-01-592-2961
NSN 6650-01-481-8009
NSN 5835-01-392-7683
NSN 5965-01-215-0993
NSN 6240-00-248-6517
NSN 6620-01-291-6452
NSN 5915-01-013-0243
NSN 5935-00-113-7646
NSN 6110-00-730-8143