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 5996-00-050-4288
NSN 5945-01-351-9415
NSN 5920-00-189-0858
NSN 5965-00-539-7778
NSN 6650-01-378-4901
NSN 5985-01-103-3158
NSN 5960-00-391-6493
NSN 5910-01-317-3037
NSN 4140-00-902-7744
NSN 5960-01-381-2478
NSN 5990-00-226-7894
NSN 5996-00-151-4462