Product Description
CMT Screw for Bearing - Torx T15 TBTI M3.5 x 3.5 x 6mm (Diameter: 6mm) is a genuine CMT replacement fastener designed to secure bearings on CMT router bits and cutter heads. This Torx-drive bearing screw uses a T15 drive interface and TBTI thread profile, giving woodworkers and shop professionals a precise, slip-resistant fastening solution that keeps bearings locked firmly in position during routing operations. Having the correct replacement screw on hand means less downtime and continued performance from your CMT tooling investment.
Key Features
- Torx T15 drive - the six-lobe Torx interface reduces cam-out during tightening, delivering more torque transfer and a more secure bearing hold compared to Phillips or slotted drives
- TBTI thread type, M3.5 x 3.5 pitch - a precisely matched thread specification engineered for CMT bearing assemblies, ensuring full thread engagement and a tight, vibration-resistant fit
- 6mm head diameter - sized to seat properly against the bearing face, distributing clamping load evenly and preventing bearing movement during high-speed cutting passes
- Genuine CMT replacement part - manufactured to the same tolerances as the original fastener, so fit and function match what came on your CMT bit or cutter head from the factory
- Active production status - this part number is currently in active production, meaning consistent availability when you need to restore your CMT tooling to full working order
Why This Product
- Restoring a CMT router bit or cutter head bearing requires an exact-match fastener - this screw is the direct OEM specification part (M3.5 x 3.5, T15 Torx, 6mm diameter) so there is no guesswork about fit or compatibility
- The Torx T15 interface resists cam-out and stripping under the high rotational forces present during routing, helping maintain a safe and secure bearing attachment throughout the life of the tool
- Sourcing a replacement bearing screw rather than discarding a worn or stripped bit body extends the working life of your CMT tooling and reduces overall tooling cost
- The compact M3.5 x 3.5 thread and 6mm head are precision-dimensioned to work within the tight clearances of CMT bearing seats, so installation is straightforward without modification
Specifications
- Brand: CMT Orange Tools
- Model Number: 990.072.00
- Description: SCREW FOR BEARING TORX T15 TBTI M3.5x3.5x6mm D=6mm
- Drive Type: Torx T15
- Thread Type: TBTI
- Thread Size: M3.5 x 3.5
- Diameter: 6mm
- Product Class: RPRB
Frequently Asked Questions
What drive tool do I need to install or remove this screw?
This screw uses a Torx T15 drive. You will need a T15 Torx driver or T15 Torx bit to install or remove it. The six-lobe Torx interface is important - do not attempt to use a Phillips or flat-head driver, as this can damage the drive recess and make removal difficult.
What does TBTI mean for this screw?
TBTI refers to the specific thread form designation for this fastener. It identifies the thread geometry used in CMT bearing seat assemblies. Using a screw with the correct TBTI thread profile - M3.5 x 3.5 as specified - ensures proper engagement with the threaded hole in the CMT bit body and a secure hold for the bearing.
Which CMT tools is this screw compatible with?
This screw is designed for use with CMT router bits and cutter heads that use T15 Torx bearing screws with an M3.5 x 3.5 thread and a 6mm head diameter. If your CMT bit or cutter head uses a bearing secured by a Torx T15 fastener of this size, this is the correct replacement part. Check your specific CMT tool documentation to confirm the required screw specification before ordering.
Why would I need to replace a bearing screw on a CMT router bit?
Bearing screws can become stripped, corroded, or damaged over time - especially if the wrong drive tool was used or if the bit was disassembled frequently for bearing replacement. Having a correct replacement screw like the 990.072.00 on hand allows you to restore the bearing assembly to full working condition rather than replacing the entire bit body, saving both time and tooling cost.
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