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 5895-01-369-0888
NSN 5975-01-211-6594
NSN 5945-00-433-0294
NSN 6320-01-176-8367
NSN 7035-01-408-3699
NSN 6130-01-406-3204
NSN 6135-00-628-1142
NSN 6240-00-646-6931
NSN 5930-01-182-2846
NSN 5960-01-327-0334
NSN 5920-01-154-7363
NSN 5925-01-189-2355