Product Description
CMT Hook Head Insert for ER25 Collet Nuts - 40-45mm Diameter, 14x18mm Shank is a precision-engineered interchangeable insert designed for use with torque wrench systems that require accurate clamping force when tightening ER25 collet nuts. This insert fits the 40mm to 45mm diameter range and is built to work with a 14x18mm drive shank, making it a reliable tool for machinists and woodworking professionals who depend on repeatable, calibrated torque application to secure router tooling safely and consistently.
Key Features
- Hook head insert design for ER25 collet nuts (40-45mm diameter range) - engages the collet nut securely across the full 40-45mm diameter range, reducing the risk of slippage during tightening and ensuring a firm, consistent grip on ER25 clamping nuts
- 14x18mm drive shank - matches the drive interface of compatible torque wrenches precisely, so the insert seats firmly without wobble or misalignment during use
- Compatible with interchangeable torque wrench systems rated 20-200 Nm - works within the full torque range of the compatible wrench, giving operators confidence that collet nuts are tightened to the correct specification every time
- Meets recognized torque accuracy standards - the system this insert is part of meets internationally recognized torque accuracy standards, which is essential for professional shops where toolholder clamping force must be verifiable and documented
- Protective case included with the torque wrench system - the wrench system this insert works with is supplied in a protective case with an instruction manual and a unique calibration certificate, helping keep the instrument protected and its certification traceable
Why This Product
- For professionals using ER25 clamping nuts in router or CNC tooling setups, this insert provides a purpose-built fit for the 40-45mm collet nut diameter - eliminating the guesswork of using generic spanners that can round nut edges or apply uneven force
- The 14x18mm drive interface is specific and intentional - it pairs directly with compatible torque wrenches in the interchangeable head system, so there is no adapting or improvising required when switching between insert sizes
- As part of a modular, interchangeable torque wrench system, this insert allows a single wrench handle to serve multiple collet nut sizes - reducing tool clutter and the cost of maintaining separate wrenches for each application
Specifications
- Manufacturer Part Number: TW-4045
- Brand: CMT Orange Tools
- CMT Part Number: CMT-TW-4045
- Description: Hook Head Insert Diameter 40-45mm (ER25) S=14x18mm
- Product Class: Router Cutter
- Diameter: 40mm - 45mm
- Shank: 14x18mm
- Compatible Collet System: ER25
- Torque Range (compatible wrench): 20-200 Nm
What's Included
- 1x Hook Head Insert - 40-45mm (ER25), 14x18mm shank
- Protective case (with torque wrench system)
- Instruction manual
Frequently Asked Questions
What collet nut size does the CMT TW-4045 fit?
The TW-4045 is designed specifically for ER25 collet nuts in the 40mm to 45mm diameter range. It will not fit collet nuts outside of this diameter range, so always verify your collet nut diameter before selecting an insert size.
What drive size does this insert use, and does it work with other torque wrenches?
This insert uses a 14x18mm drive shank, which is the drive interface used by the compatible interchangeable torque wrench system rated 20-200 Nm. It is designed to work within that specific interchangeable torque wrench system and its 14x18mm drive interface.
Is this insert sold as part of a kit or as a standalone accessory?
The TW-4045 is the hook head insert itself, intended for use with the compatible interchangeable torque wrench system. The torque wrench system is supplied in a protective case that includes the instruction manual and calibration certificate. The insert fits into the modular, interchangeable head system, allowing one wrench handle to accept different insert sizes for various collet nut diameters.
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