TC v16. Threaded nuts have one or both ends of the hexagon chamfered, usually at an angle of 30Â° and reaching across the nut face(s) to form a circle whose diameter is a little less than the across flats dimension. This means that at the across flat position there is hardly a chamfer whilst across the corners there is a substantial chamfer. Using the usual TC chamfer tools provides each flat with a discrete chamfer that is not pictorially correct. Is there a tool or an easy way to produce the correct representation? One way I suppose would be to call up a standard nut from the library or one of the free models that are around and then scale to suit but that will not work for special modifications to the ends of hexagon (polygonal prism) extrusions.