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 5920-01-210-2300
NSN 5920-00-636-4713
NSN 6620-01-332-0623
NSN 5960-00-308-9123
NSN 4140-01-607-6551
NSN 5945-00-828-3942
NSN 6620-01-294-1044
NSN 6135-01-230-4399
NSN 5915-01-403-2599
NSN 2925-01-301-9339
NSN 5910-01-160-0938
NSN 5990-01-227-6526