Runout compensation nuts

Published Date
November 18, 2025
compensation nuts Correct Runout Errors and Misalignment

The Diatool easyZERO runout compensation nuts from Monaghan Tooling is available in kit form. Designed for round tools using ER collets (ER16 to ER40), the easyZERO corrects runout errors and misalignment for round tools, providing reamers with the stability to hold tolerances as tight as 0.0011”.  

A variety of kits are stocked for immediate shipment -- ranging from a basic kit (easyZERO nut with hex key) to a comprehensive kit that includes the nut, hex key, spanner, and ER collet. 

With this technology, cutting edges equally share the chip load, ensuring concentric cutting, consistent tool wear, and extended tool life. By rapidly dialing in runout, users spend less time resetting tools and collets, improving efficiency, reducing scrap rates, and lowering overall costs.  

Related Glossary Terms

  • collet

    collet

    Flexible-sided device that secures a tool or workpiece. Similar in function to a chuck, but can accommodate only a narrow size range. Typically provides greater gripping force and precision than a chuck. See chuck.