Product Description
The CMT Screw for Bearing - Torx T8 TSPTI M2.5 x 4.5 x 6mm (Diameter: 3.7mm) is a precision replacement fastener designed to secure bearings on CMT router bits and cutter heads that use the T8 Torx drive system. Having the correct replacement screw on hand means less downtime when a bearing fastener is lost or damaged - keeping your tooling running at full performance without interruption. This small but critical component matches the exact thread pitch and head geometry required for a secure, properly torqued bearing assembly.
Key Features
- Torx T8 drive head - provides a positive, cam-out-resistant fit with a T8 Torx driver, delivering controlled torque when securing the bearing without stripping the fastener head
- M2.5 x 4.5 x 6mm thread specification - matches the precise threading used in CMT bearing assemblies, ensuring a flush, fully engaged fit that holds the bearing firmly in place during operation
- 3.7mm head diameter - sized to seat correctly within the bearing recess, preventing movement or vibration that could affect cut quality or bearing longevity
- TSPTI screw type - a specialized countersunk pan-head profile engineered for bearing retention applications, keeping the fastener low-profile and out of the cutting path
- Designed as a direct replacement for CMT tooling - eliminates guesswork when sourcing a replacement, ensuring full compatibility with CMT router bits and cutter heads that require T8 Torx bearing screws
Why This Product
- Losing or stripping a single bearing screw can render an otherwise functional CMT router bit unusable - keeping this exact replacement on hand restores your tooling quickly without needing to replace the entire bit
- The T8 Torx interface allows precise torque application during reassembly, reducing the risk of over-tightening or under-tightening the bearing - both of which can cause premature bearing failure or unsafe operation
- The exact M2.5 x 4.5 x 6mm dimensions and 3.7mm head diameter match the OEM specification, so there is no risk of thread mismatch or a loose-fitting head that could back out under load
- Sourcing a CMT-specified replacement fastener rather than a generic substitute ensures the screw performs to the same standard as the original, maintaining the integrity of the bearing assembly and the quality of your cuts
Specifications
- Manufacturer Part Number: 990.071.00
- Brand: CMT Orange Tools
- Description: SCREW FOR BEARING TORX T8 TSPTI M2.5x4.5x6mm D=3.7mm
- Drive Type: Torx T8
- Screw Type: TSPTI
- Thread Size: M2.5
- Length: 6mm
- Thread Length: 4.5mm
- Diameter: 3.7mm
- Class: RPRB
- Status: Active
Frequently Asked Questions
What tool do I need to drive this screw?
This screw uses a Torx T8 drive, so you will need a T8 Torx driver or bit to install or remove it. Using the correct driver size is important to avoid stripping the small Torx head during torquing.
What thread size is this screw, and how do I confirm it is the right fit for my CMT tooling?
This screw is threaded M2.5 with an overall length of 6mm and a threaded shank length of 4.5mm. It is intended for CMT router bits and cutter heads that use T8 Torx bearing screws. Check your CMT tooling documentation or the existing screw on your bearing assembly to confirm M2.5 x 4.5 x 6mm is the correct specification before installation.
What does TSPTI mean in the screw designation?
TSPTI refers to the specific head and thread profile type of this fastener as designated in CMT's parts classification system. This profile is engineered for bearing retention on CMT router bits, keeping the screw head low-profile and properly seated within the bearing assembly.
Is this screw sold as a single piece?
The product data does not specify a multi-piece pack quantity, so this item is treated as an individual replacement screw. If you require multiple screws, check the quantity listed at the time of purchase or order accordingly.
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