681031

For blind holes. The right hand spiral helps pull chips out the top 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″