The CMT TW-006 Adjustable Torque Screwdriver Set is a precision hand tool designed specifically for tightening insert knife screws and cutter head fasteners on CMT router bits and cutter heads. Covering a torque range of 1-6 Nm, this set gives woodworkers and shop professionals the control needed to seat carbide insert knives correctly - preventing over-tightening damage to knife seats while ensuring safe, reliable cutter operation. The set ships complete with 20 driver inserts, a square adaptor, and a calibrated torque screwdriver, all organized in a protective carrying case.

Key Features

• Adjustable torque range of 1-6 Nm - covers the full fastening range for CMT insert router bit screws and cutter head knives, so one tool handles multiple fastener sizes without guesswork.
• 20 included driver inserts (0, 1, 2, 3 x4 - 8, 9, 15, 20, 25 x5 - 3, 4, 5, 6 x4 - 1.5, 2, 3, 4, 5, 6 x6) - broad insert variety means the set is ready for virtually every CMT cutter head screw size right out of the case.
• Factory-calibrated accuracy - factory-verified accuracy gives confidence that the screwdriver is performing within specification, an important safety assurance when fastening rotating cutter knives.
• Suggested tightening torques provided (M3.5 = 1.8 Nm, M4 = 2.7 Nm, M5 = 5.3 Nm for Class 8.8 screws) - takes the guesswork out of setup by giving precise torque targets for the most common insert screw sizes used in CMT router and cutter tooling.
• 1/4 in. (6.35 mm) square adaptor included - allows the torque screwdriver to interface with standard drive inserts, adding flexibility when working across different cutter configurations.
• Plastic protective carry case included - keeps all 20 inserts, the adaptor, and the screwdriver organized and protected between uses, reducing the chance of lost components in a busy shop environment.
• Instruction manual and calibration certificate included - provides documented proof of accuracy and clear guidance for correct use, supporting both operator confidence and shop safety protocols.

Why This Product

• Prevents costly knife seat damage - over-tightening insert knife screws is one of the most common causes of damaged cutter heads. The adjustable torque mechanism stops at the set value, protecting the knife seat and the carbide insert every time.
• Supports safe cutter operation - properly torqued knife screws stay secured during high-speed routing. Under-tightened inserts can shift or eject during use, making correct torque a genuine safety requirement, not just a preference.
• Calibrated to recognized international standards - factory calibration provides documented accuracy operators can rely on
• Comprehensive insert selection in a single set - with 20 driver inserts spanning a wide range of tip sizes, this set consolidates what would otherwise require multiple individual tools, reducing clutter and saving time during router bit changeovers.