Fractional Size Special Thread High Speed Steel Round Adjustable Dies-2-1/2" Outside Diameter

Round Dies are chamfered on both faces. One side has a 2 to 3 thread chamfer for threading, the other side has a 1 to 1-1/2 thread chamfer for threading close to a shoulder. Adjustment is obtained by a fine pitch screw which forces the sides of the die aprt, or allows them to spring together. The solt is beveled so that when the dies are used in a machine holder the adjusting screw can be removed and adjustment madde by the adjusting screws in the holder.