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 5996-00-411-4554
NSN 5930-01-039-3773
NSN 5996-00-797-9571
NSN 6620-00-717-2529
NSN 2925-01-113-6904
NSN 6145-00-822-6095
NSN 6240-00-295-2999
NSN 5965-01-406-4164
NSN 6220-01-384-5297
NSN 5960-01-392-6982
NSN 5930-00-682-5378
NSN 5950-00-942-7894