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 5835-00-969-5771
NSN 5996-01-346-1099
NSN 5910-01-100-0627
NSN 5910-01-578-3875
NSN 5996-00-204-6364
NSN 6645-00-359-5463
NSN 5996-01-149-2434
NSN 5965-01-492-9344
NSN 5920-00-456-5211
NSN 5975-01-575-3660
NSN 6110-00-808-8373
NSN 5930-00-044-5063