Aircraft Counterbore Carbide Tipped Reduced Shank 3/8″ – Super Tool

Description

Product Overview

The Super Tool 1.5″ Aircraft Counterbore is a precision‑engineered cutting tool designed to meet the demanding requirements of aerospace and high‑performance machining environments. Constructed from high‑grade carbide, the cutting tip maintains sharpness even after extended use, reducing the need for frequent replacements and minimizing downtime. The reduced 3/8″ shank diameter allows the tool to access tight‑space machines where standard shank sizes would be obstructed, delivering consistent performance without sacrificing rigidity.

With a three‑flute geometry, the counterbore removes material efficiently while producing a smooth, burr‑free finish. The 1/64″ corner radius further enhances surface quality, making the tool ideal for spotfacing operations where a clean, flat surface is critical. The overall length of 2.75 inches and an overall length (OAL) of 2.75 inches provide a compact profile that is easy to handle, yet the tool remains robust enough to withstand the high forces encountered during heavy‑duty machining.

Additional features include a set screw that securely holds a pilot or drill bit in place, ensuring precise alignment and reducing the risk of tool deflection. The tool’s tolerance specifications—diameter tolerance of +0.001″/‑0″ and shank tolerance of +0″/‑0.001″—guarantee a tight fit in the spindle, delivering repeatable accuracy across multiple workpieces. Designed and manufactured in the USA, this counterbore reflects Super Tool’s commitment to quality and reliability.

Usage

This counterbore excels in applications that require precise counterboring and spotfacing on aircraft components, turbine parts, and other high‑stress assemblies. Its reduced shank design makes it especially suitable for CNC machines with limited tool holder clearance, allowing operators to reach deep pockets and tight corners without compromising tool stability. The carbide tip’s durability enables it to handle hardened alloys such as titanium and high‑strength steel, making it a versatile choice for both prototype development and full‑scale production runs.

When paired with a correctly sized pilot hole—typically 1/4″ for this tool—the counterbore can achieve exact diameters down to .281″ without cutting below the pilot size, ensuring consistent bore dimensions across batches. The tool is also well‑suited for maintenance and repair tasks where spotfacing is required to prepare surfaces for fasteners, providing a clean, flat seat that improves joint integrity. Operators appreciate the ease of setting up the pilot or drill bit via the set screw, which reduces changeover time and enhances workflow efficiency.

Why Choose Us

Choosing the Super Tool Aircraft Counterbore means investing in a product that combines American craftsmanship with cutting‑edge material technology. Each tool undergoes rigorous quality control inspections, ensuring that the carbide tip meets exacting hardness standards and that the shank dimensions conform to tight tolerances. This attention to detail translates into longer tool life, reduced wear, and superior performance on demanding machining tasks.

Beyond the physical attributes, Super Tool provides comprehensive customer support, including technical assistance for tool selection, setup guidance, and troubleshooting. Our after‑sales service includes a warranty that covers manufacturing defects, giving users confidence that their investment is protected. The brand’s reputation for reliability is reinforced by its presence in the top rankings of industrial tools, reflecting a track record of satisfaction among professional machinists and engineers.

Key Features

• Carbide‑tipped cutting edge delivers long‑lasting sharpness for high‑speed machining.
• Reduced 3/8″ shank enables use in tight‑space machines where standard shanks cannot fit.
• Three‑flute design provides efficient material removal and a smooth, burr‑free finish.
• 1/64″ corner radius enhances surface quality for spotfacing and precision applications.
• Dedicated customer support and warranty ensure reliable performance and peace of mind.

FAQ

What pilot hole size should I use with this counterbore?

The recommended pilot hole for the 1.5″ Aircraft Counterbore is 1/4″. Using this size ensures the tool starts cutting at the correct diameter and prevents the cutter from engaging material below the intended minimum cut diameter of .281″.

Can this tool handle hardened steel or titanium alloys?

Yes. The carbide tip is engineered to maintain its edge even when machining hardened steels and titanium alloys commonly found in aerospace components. Its high hardness and wear resistance allow it to perform reliably under the elevated temperatures and forces associated with these materials.

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

Insert the pilot or drill bit into the designated slot on the shank, then tighten the set screw using a suitable Allen key. The screw clamps the bit firmly, preventing movement during operation and ensuring consistent alignment throughout the machining process.

What is the warranty coverage for this counterbore?

Super Tool offers a one‑year limited warranty covering any manufacturing defects. If the tool fails due to a defect in material or workmanship within this period, we will replace it at no additional cost, provided it is returned with proof of purchase.

Is this counterbore compatible with standard CNC tool holders?

Yes. The 3/8″ shank diameter conforms to common CNC tool holder specifications, allowing seamless integration into most modern machining centers. The reduced shank profile ensures compatibility with holders that have limited clearance, expanding the range of machines on which the tool can be used.