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 5855-01-176-9935
NSN 5835-01-202-9673
NSN 5950-01-528-7982
NSN 6110-00-269-2696
NSN 5915-01-250-4898
NSN 5905-01-068-1464
NSN 5835-01-238-3381
NSN 5998-01-171-2791
NSN 6135-01-520-4670
NSN 5920-00-694-0483
NSN 6240-01-660-1680
NSN 6650-01-045-5494