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 6135-01-572-3296
NSN 5999-01-484-8786
NSN 6650-00-175-1342
NSN 5930-01-562-8243
NSN 6130-01-247-9758
NSN 7035-00-679-9027
NSN 6110-01-456-1985
NSN 5920-01-375-1238
NSN 6320-01-227-2648
NSN 5950-00-218-4922
NSN 6130-01-254-8784
NSN 5930-00-678-2946