Aircraft Counterbore Carbide Tipped Reduced Shank 1 1/16″ 3/8″ Shank

Description

Product Overview

The Super Tool 1 1/16″ aircraft counterbore is a precision‑engineered cutting tool designed for demanding aerospace and industrial applications. Constructed from high‑grade carbide, the cutting tip maintains sharpness even under high spindle speeds, delivering consistent material removal and superior surface finish. The reduced shank design allows the tool to fit into machines with limited tool holder clearance, while the 3/8″ shank diameter provides robust torque transmission. With three flutes, the tool balances chip evacuation and rigidity, reducing vibration and extending tool life. The overall length of 2.75 inches and a compact 1.06‑inch diameter make it ideal for tight‑space machining, and the 1/64″ corner radius minimizes burr formation on finished holes.

Usage

This counterbore excels in environments where precision and repeatability are paramount. It is commonly used for counterboring and spotfacing on aircraft structural components, engine housings, and sheet‑metal assemblies where a smaller shank is required to avoid interference with surrounding features. The tool’s pilot hole requirement of 3/16″ ensures accurate positioning, and the minimum cut diameter of .219″ prevents undersized holes. Operators can employ the set screw to secure a pilot or drill bit, providing flexibility for various machining strategies. Whether mounted on a CNC mill or a manual drill press, the counterbore delivers clean, round holes that meet stringent aerospace tolerances.

Why Choose Us

Super Tool is a trusted American manufacturer known for delivering high‑performance cutting tools that meet rigorous industry standards. Each counterbore is produced in the USA using controlled processes that guarantee dimensional accuracy, with tool diameter tolerance of +0.001″/‑0″ and shank tolerance of +0″/‑0.001″. The carbide tip is heat‑treated for maximum hardness, reducing wear and extending service intervals. Our commitment to quality is backed by a comprehensive warranty and responsive technical support, ensuring that customers receive not only a superior product but also the expertise needed to maximize its performance. By choosing this counterbore, you benefit from a tool that combines durability, precision, and the reliability of a brand with a proven track record in aerospace tooling.

Key Features

• Carbide‑tipped tip delivers long life and maintains sharpness at high speeds
• Reduced shank design fits tight machine clearances without sacrificing rigidity
• Three‑flute geometry provides efficient chip evacuation and stable cutting
• 1/64″ corner radius minimizes burrs, producing smooth hole edges
• U.S. manufacturing backed by warranty and dedicated technical support

FAQ

What pilot hole size is required for this counterbore?

The recommended pilot hole diameter is 3/16″. Using this pilot ensures accurate positioning and prevents the tool from cutting below its minimum diameter of .219″.

Can this counterbore be used on materials other than aluminum?

Yes, the carbide tip is suitable for a range of metals including steel, titanium, and composite alloys. Adjust feed rates and spindle speeds according to the material’s machinability guidelines for optimal results.

How do I secure a pilot or drill bit in the tool?

The tool features a set screw that allows you to lock a pilot or drill bit in place. Tighten the screw firmly to prevent movement during operation, ensuring consistent hole placement.

Is this tool compatible with standard CNC tool holders?

Absolutely. The 3/8″ shank diameter conforms to common CNC collet sizes, making it easy to integrate into existing machining setups without the need for special adapters.

What warranty does Super Tool provide for this counterbore?

Super Tool offers a limited one‑year warranty covering manufacturing defects. Should any issues arise, contact our customer service team for a replacement or repair solution.