682020

For through holes. The left hand spiral helps push chips out the bottom of the hole. Spiral flutes are also good for reaming holes with interruptions such as keyways, slots, or intersecting holes. Solid carbide head brazed to hardened alloy steel shank on tool diameters .1911″ and larger. Tools smaller than .1911″ are one piece solid carbide construction. Diamters 7/64″ and below are provided with male centers.
Tool diameter tolerance thru .2500″: +.0002″/-0″
over .2500″: +.0003″/-0″
Shank diameter tolerance: +0/-.001″