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 5930-01-338-3757
NSN 6105-01-289-7189
NSN 6240-01-621-9941
NSN 5998-00-157-6975
NSN 6240-01-283-0404
NSN 6105-01-123-6123
NSN 5996-01-168-6815
NSN 5950-01-654-6954
NSN 6130-01-224-5521
NSN 6650-01-255-1643
NSN 6135-00-134-6648
NSN 5855-01-601-8145