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 5920-01-146-4503
NSN 5915-00-075-7318
NSN 5930-01-202-7588
NSN 5996-01-097-6256
NSN 5999-00-612-3032
NSN 6240-01-055-5193
NSN 6220-00-148-8698
NSN 5915-01-143-6887
NSN 6135-01-397-6564
NSN 5835-01-023-8733
NSN 5960-00-284-5234
NSN 6650-00-510-3786