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 5999-00-790-1616
NSN 5945-01-272-9579
NSN 7035-01-191-2822
NSN 5925-01-530-2863
NSN 5895-00-651-1265
NSN 6135-01-633-2066
NSN 5930-00-050-3248
NSN 7035-00-908-4933
NSN 2925-01-093-5479
NSN 6645-00-012-5834
NSN 5935-01-620-2403
NSN 6105-01-365-3404