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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5998-01-502-6245
NSN 6320-01-296-3181
NSN 5915-00-110-5150
NSN 6620-01-408-2989
NSN 5915-01-633-9845
NSN 6130-01-278-8596
NSN 5855-01-105-7793
NSN 5915-01-128-6123
NSN 4140-01-317-3559
NSN 6645-01-492-5304
NSN 5975-01-227-2389
NSN 5895-01-073-5503