Product Description
The CMT 990.086.00 Screw for Bearing STEI Pin M8 x 20mm is a precision replacement fastener from CMT, engineered to secure bearing assemblies in compatible CMT router bits and cutter heads. This M8 x 20mm STEI pin screw delivers the exact threading and dimensional fit required to maintain tight, reliable bearing retention - keeping your tooling performing safely and consistently during demanding routing and machining operations. Whether you are restoring a worn assembly or stocking spare hardware for high-use production environments, this bearing screw ensures your CMT tooling stays properly secured and ready for work.
Key Features
- M8 x 20mm thread specification - matches the precise dimensional requirements of compatible CMT bearing assemblies, eliminating guesswork and ensuring a secure, properly torqued fit without modification
- STEI pin design - purpose-built fastener geometry engineered specifically for bearing retention applications, providing the holding strength needed to keep bearings locked in position under continuous routing loads
- Direct replacement part from CMT - sourced from the original manufacturer, so it integrates seamlessly with existing CMT router bits and cutter head assemblies without risk of dimensional mismatch
- Active production status - currently manufactured and available, meaning you can source this exact replacement screw when you need it rather than searching for a workaround
Why This Product
- When a bearing screw fails or strips, having the correct OEM-specification M8 x 20mm STEI pin replacement on hand gets your CMT tooling back into service quickly without compromising the integrity of the bearing assembly
- Using a manufacturer-matched fastener rather than a generic substitute ensures the thread pitch, pin geometry, and length are exactly what the CMT assembly was designed around - protecting both the bearing and the tool body
- The M8 x 20mm sizing is a specific, non-interchangeable specification, making this the correct part for applications that require this exact screw rather than a close approximation
- Keeping a spare CMT 990.086.00 screw in your shop minimizes downtime during production runs where a loose or damaged bearing fastener would otherwise halt work entirely
Specifications
- Manufacturer Part Number: 990.086.00
- Brand: CMT Orange Tools
- Description: Screw for Bearing STEI Pin M8 x 20mm
- Small Diameter: M8 x 20mm
- Product Class: RPHK
- Status: Active
Frequently Asked Questions
What is this screw used for?
This M8 x 20mm STEI pin screw is designed to secure bearing assemblies in compatible CMT router bits and cutter heads. It is a replacement fastener intended to restore proper bearing retention when the original screw is worn, stripped, or missing.
What does the M8 x 20mm designation mean?
M8 refers to the metric thread diameter of 8mm, and 20mm is the length of the screw. These dimensions are fixed specifications for this part - using a screw with a different thread size or length could result in an improper fit and unsafe tool operation.
Is this screw compatible with all CMT router bits and cutter heads?
This screw is intended for use with CMT router bits and cutter head assemblies that specifically require an M8 x 20mm STEI pin bearing screw. If you are unsure whether your CMT tooling uses this exact part, check your tool's parts diagram or contact CMT directly to confirm compatibility before ordering.
What does the STEI pin designation indicate?
STEI refers to the specific pin-type fastener design used in this bearing screw application. It identifies the fastener geometry and function within CMT's bearing assembly system, distinguishing it from standard hex or socket-head screws that would not be correct for this application.
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