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 5960-00-445-1332
NSN 5998-00-783-3415
NSN 7035-01-593-1719
NSN 5920-00-155-2173
NSN 5835-01-495-0595
NSN 6145-01-094-5146
NSN 6240-00-389-4822
NSN 6110-00-581-4445
NSN 7035-01-354-4318
NSN 5920-00-805-7132
NSN 5915-01-323-5383
NSN 6135-00-078-9931