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 7035-01-013-9889
NSN 6240-01-526-6573
NSN 5920-00-180-0223
NSN 5930-00-599-9783
NSN 6645-01-044-6376
NSN 6110-01-159-0514
NSN 6240-01-496-3847
NSN 5945-00-442-5460
NSN 6620-01-531-3250
NSN 5915-00-256-3938
NSN 5950-01-038-5726
NSN 5999-01-122-9902