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 5920-00-185-5801
NSN 5930-01-626-8226
NSN 5985-01-167-9358
NSN 6685-01-062-5591
NSN 5945-01-237-2010
NSN 6130-01-036-2961
NSN 6620-00-736-8457
NSN 6240-00-461-1451
NSN 5930-00-253-4369
NSN 5895-00-244-1838
NSN 6135-01-455-6012
NSN 6610-00-929-4754