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 6110-01-234-9854
NSN 5835-01-621-0750
NSN 4140-00-521-0380
NSN 5960-00-343-0852
NSN 5930-00-204-6409
NSN
NSN 6610-01-474-4397
NSN 5945-01-626-4693
NSN 5990-00-847-6957
NSN 6320-01-318-6518
NSN 5945-01-415-6049
NSN 5999-01-364-1949