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 2925-01-004-5627
NSN 5905-01-546-8720
NSN 6220-01-472-5438
NSN 5835-00-422-1441
NSN 2925-01-575-7376
NSN 5945-00-903-7498
NSN 5935-00-478-1245
NSN 6135-01-202-8113
NSN 6645-01-126-5526
NSN 5950-00-125-2490
NSN 5950-00-061-8296
NSN 5930-00-205-9157