Best Counterbores of 2026

The Accusize Cap Screw Counterbore Set is a high-quality tool designed for creating recesses in workpieces for cap screws. Made of high-speed steel with a straight shank, this set includes 7 pieces ranging from 6# to 1/2''. With these counterbores, you can easily attach components to your workpiece using cap screws, especially when the component has a thickness greater than the length of the cap screw. Additionally, the counterbores allow you to create a flush or countersunk appearance for the cap screw heads, giving your workpiece a neat and professional finish. Whether you need to attach components or enhance the appearance of cap screws, the Accusize Cap Screw Counterbore Set is a reliable and convenient choice.

The HHIP 2007-0023 Counterbore Set is a versatile and convenient tool for any workshop. This set includes 14 pilots with a 5/32" shank, ranging from 0.187 to 7/16, and 6 counterbores ranging from 5/16 to 5/8. The set also comes with a holder with a 3/8" shank, all neatly organized in a fitted case. The interchangeable pilots allow for precise and accurate counterboring, while the different sizes of counterbores cater to a variety of hole diameters. The straight shank design ensures stability during use. With this counterbore set, you can easily create recessed holes for screws or other fasteners, saving you time and effort. The HHIP Counterbore Set is a reliable tool that will enhance your drilling and machining tasks.

The Accusize Counterbore Set is a versatile tool kit designed to meet various machining needs. It comes with 14 interchangeable pilots featuring a 5/32" shank, allowing you to easily switch sizes from 0.187" to 7/16" for different tasks. The set also includes 6 counterbores ranging from 5/16" to 5/8", ensuring precision for your projects. With a 3/8" straight shank holder, you gain added convenience and efficiency in your work. All tools are housed in a sturdy aluminum case, keeping them organized and protected from damage.

The Accusize Counterbore Set is designed to meet your diverse countersinking needs with its range of sizes, including #6 to 1/2 inch. Made from high-speed steel, these tools provide durability and exceptional cutting performance, making them perfect for various projects. The efficient 3-flute design enhances chip removal, ensuring a clean finish for your precision machining tasks. Additionally, the universal straight shank allows for compatibility with different drilling and milling machines, giving you flexibility and convenience in your work.

The Shars Counterbore Set is a versatile tool collection that includes 13 different counterbores, ranging from 1/4" to 1". With a straight shank design, these counterbores are easy to use and fit into a variety of drills, making your projects more efficient. The three-flute design helps in achieving smoother finishes and faster cutting, which is essential for precision work. This 40-piece set offers a wide range of sizes, ensuring you have the right tool for any task, greatly enhancing your woodworking or metalworking capabilities.

The Drill America Aircraft Counterbore is designed to help you enlarge specific sections of existing holes with ease. Made from high-speed steel, this tool offers a great balance of durability and toughness, making it suitable for many general tasks. Its round shank design fits a wide range of tool holders, giving you flexibility in how you use it. This counterbore features a two-piece setup with an integral shank and interchangeable pilot, allowing you to adapt the tool to different jobs and improve your efficiency.

The Accusize Metric Counterbore Set offers a versatile range of pilot sizes from 4mm to 10.5mm, allowing you to handle various drilling tasks with precision. Its six counterbore sizes cover a broad range of hole diameters, making it ideal for different machining projects. The set includes a 10mm straight shank holder, which helps you quickly change tools and reduces downtime, boosting your productivity. All these tools come neatly organized in a high-quality aluminum case, keeping your workspace tidy and ensuring easy access whenever you need them.

The Accusize Counterbore Set is a versatile toolset designed for creating recesses in a workpiece for cap screws. With a total of 7 pieces, this metric set includes sizes ranging from M3 to M12, allowing you to work with various cap screw dimensions. Made from high-speed steel, these counterbores ensure durability and longevity. The straight shank design provides stability and ease of use. With a 3-flute construction, these counterbores deliver efficient and precise cutting. Whether you need to attach components using cap screws or achieve a flush or countersunk appearance, the Accusize Counterbore Set is a reliable choice.

The Accusize Counterbore Set offers a complete kit designed to make your machining tasks easier. It includes a variety of counterbores sized from 1/4" to 1", giving you plenty of options for different jobs. With 26 pilots included, you get precise fits for your drilling needs, ensuring accuracy and flexibility. The set comes in a sturdy wooden case, which keeps everything organized and protected during transport or storage. Plus, the straight shank design means you can use these tools with many types of drilling and milling machines, making this set a versatile addition to your workshop.

The Accusize Metric Cap Screw Set offers a range of sizes from M3 to M12, giving you flexibility for different project needs. Made from high-speed steel, these tools are built to last and handle tough materials without wearing out quickly. The three-flute design helps clear debris efficiently, which means smoother cuts and better finishes for your work. Plus, the bright finish adds strength and protects the tools from rust, so you get reliable performance every time. This set is ideal if you want clean, precise countersinks for cap screws in your metalworking tasks.