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 5920-00-869-6403
NSN 5895-01-592-4359
NSN 5925-01-330-2362
NSN 5960-00-465-4088
NSN 5945-01-190-8585
NSN 6320-01-564-0893
NSN 5835-01-066-5337
NSN 5990-01-343-6407
NSN 5920-01-553-0906
NSN 6610-01-657-1773
NSN 6620-01-420-3386
NSN 5935-00-659-0682