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 5999-00-262-6041
NSN 6110-00-917-3805
NSN 5855-00-361-0167
NSN 5835-01-110-0697
NSN 6105-01-550-7129
NSN 5965-00-412-4402
NSN 6650-01-318-9413
NSN 4140-00-841-9258
NSN 5930-01-501-8604
NSN 5990-01-453-3552
NSN 7035-00-535-8109
NSN 6240-01-592-3176