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 6105-00-707-5962
NSN 5915-01-546-7335
NSN 5999-01-587-3984
NSN 5960-01-390-5961
NSN 7035-01-541-5414
NSN 6135-00-967-3112
NSN 6240-01-425-1659
NSN 5925-01-391-4986
NSN 5855-01-483-2774
NSN 6135-01-068-0119
NSN 6650-00-294-0881
NSN 6620-00-189-2381