1/2\ Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4\ Shank Diameter, 3 Flutes, 2 3/4\ OAL, (.5\ Diameter), 52216, USA Made
- For counterboring and spotfacing in applications where machine requires a smaller shank.
- 1/64" Corner Radius, Tool Diameter Tolerance: +.001"/-0". Shank Diameter Tolerance: +0"/-.001".
- Pilot Hole Diameter:1/8, If using a pilot this is the shank diameter of the pilot you should choose.
- Minimum Cut Diameter: .156" Because there is a pilot hole the tool will not cut below this diameter..
- Set screw to hold a pilot or drill bit in place (if you are using a pilot or drill bit).