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 6620-00-371-7109
NSN 7035-01-207-2676
NSN 5945-01-113-7250
NSN 5855-00-179-8588
NSN 5855-01-468-1431
NSN 5990-00-285-1948
NSN 5835-01-324-8739
NSN 5990-01-134-7756
NSN 6320-01-098-2503
NSN 5910-01-485-6135
NSN 2925-00-770-4713
NSN 6150-00-510-7875