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 5835-00-821-8555
NSN 6685-01-076-3915
NSN 5945-01-466-6347
NSN 5998-01-441-1341
NSN 6220-00-635-1317
NSN 6135-00-351-8606
NSN 5855-00-004-0904
NSN 6150-01-448-4336
NSN 6130-00-607-6069
NSN 5920-00-208-4891
NSN 5965-01-609-7978
NSN 6105-01-418-0405