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 6150-00-001-2459
NSN 6130-01-208-2735
NSN 5985-00-889-0320
NSN 5975-00-004-1458
NSN 6240-00-553-8891
NSN 6110-01-631-9681
NSN 6130-00-223-2099
NSN 5965-01-408-9551
NSN 4140-01-124-0623
NSN 5965-00-642-9879
NSN 6240-01-423-4234
NSN 5985-01-240-1593