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Silver HSS counterbore with 11/16 inch cutter and 3/16 inch pilot, taper shank

Drill America

Drill America 11/16" x 3/16" Pilot Hole HSS Taper Shank Pneumatic Accessory

SKU CH-Y5QZ-C45G5

A two-piece HSS counterbore with an interchangeable pilot for enlarging existing holes to a shallow depth

  • HSS construction resists wear during repeated counterboring
  • Two-piece design allows interchangeable pilots for hole flexibility
  • Taper shank fits pneumatic tools for secure drive
  • 11/16" cutting diameter creates precise counterbore seats
  • Pilot hole guides cutter for accurate spot-facing alignment

Pilot-hole counterbore for pneumatic tools

This Drill America accessory is a two-piece counterbore with a taper shank designed for pneumatic equipment. It enlarges an existing hole to create a flat seat for bolt heads or nuts. The interchangeable pilot allows the cutter to be matched to different hole diameters for flexible use.

Interchangeable pilot maintains accuracy during

Because the pilot is separate from the cutter body, it stays centred in the pre-drilled hole while the counterbore removes material. This construction reduces wandering during sustained counterboring or spot-facing operations. The high-speed steel cutting edges resist wear when used continuously in production environments.

11/16 inch diameter with 3/16 inch pilot

The tool cuts a counterbore 11/16" wide and requires a 3/16" pilot hole already present in the workpiece. Buyers needing a different counterbore diameter or a larger pilot size cannot use this specific accessory. The taper shank must also match the tool holder on the pneumatic machine.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $29.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameDRILL AMERICA

Questions about this item

How much heat does the 11/16" HSS cutter generate during extended pneumatic counterboring?

The high-speed steel cutter and interchangeable pilot are designed for standard counterboring cycles; normal cutting lubrication keeps temperatures in the normal range for HSS tooling.

What pneumatic tool and shank interface are required to drive the taper-shank counterbore?

A pneumatic drill or rotary tool with a matching taper-shank receiver is needed to accept the integral shank on this counterbore assembly.

Will the interchangeable 3/16" pilot work with older counterbore bodies that use a different pilot diameter?

The pilot is specific to this two-piece counterbore; it fits the cutter supplied and is not guaranteed to match other bodies or pilot sizes.

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