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 5996-01-614-9376
NSN 6650-01-352-4674
NSN 5855-00-481-0019
NSN 6220-00-386-0997
NSN 5910-00-503-9063
NSN 5960-01-212-8118
NSN 5905-00-679-4721
NSN 2925-01-298-2674
NSN 6685-00-880-8753
NSN 2925-00-167-6762
NSN 6240-00-372-4841
NSN 5835-00-912-5656