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 5965-01-408-5990
NSN 6610-01-459-4870
NSN 5965-01-339-7665
NSN 6240-00-299-7685
NSN 6620-01-151-3986
NSN 5998-01-420-3817
NSN 5910-01-442-3647
NSN 6320-01-134-7267
NSN 6610-01-207-0045
NSN 5930-00-190-0295
NSN 6320-00-456-0836
NSN 5925-01-464-2030