Counterbores are available in High Speed Steel and Carbide tipped, with three and four flutes, and set screw for the pilot. Counterbores are used where a flat for a bolt/nut/washer must be used when assembling the part.
Counterbore pilots will fit most standard Counterbores, are made from quality tool steel, heat-treated, and ground to ensure concentricity.
Our HSS and Carbide tipped Counterbores are the short series with a 2 3/8” OAL and a 1/4 “ shank.
The radius on our Carbide tipped Counterbores is 1/64” and the non cutting area of the cutter is 1/32” larger than the pilot hole.
Counterbores and pilots are manufactured in the USA.
Free UPS Ground Shipping, up to 60 lbs. Contiguous United States only.©2017 U.S. Industrial Tool Company | 14083 S. Normandie Ave. | Gardena, California 90249