Product Description
The CMT 990.014.00 Screw for Bearing STEI Conical M4 x 4mm UNI-5927 is a precision replacement fastener designed to secure bearings on CMT router bits and cutter heads. Conforming to the UNI-5927 standard, this conical STEI screw provides a reliable, snug fit that keeps bearings firmly in place during demanding routing operations - helping you maintain accuracy and extend the working life of your CMT tooling. Whether you need a direct replacement part after wear or are building out a maintenance stock for a busy shop, this M4 x 4mm bearing retention screw is the correct specification for compatible CMT router bits equipped with M4 screw retention systems.
Key Features
- STEI conical screw design - the conical geometry draws the bearing tight and centered, reducing play and vibration during routing passes for cleaner, more consistent cuts.
- M4 x 4mm thread specification - matches the exact factory thread dimensions of compatible CMT router bits, ensuring a proper fit without modification or adaptation.
- UNI-5927 standard compliance - manufactured to a recognized industrial fastener standard, so you can trust dimensional accuracy and interchangeability with other UNI-5927 conforming components.
- Designed specifically for CMT bearing retention - purpose-built for CMT tooling rather than a generic fastener, meaning less guesswork and a direct drop-in replacement that restores your router bit to full working condition.
Why This Product
- A loose or worn bearing retention screw can cause bearing wobble, poor cut quality, and premature tool wear - this STEI conical M4 x 4mm screw restores secure bearing retention and gets your CMT router bit performing as intended.
- Sourcing the correct replacement fastener by MPN (990.014.00) eliminates the risk of using an incorrect screw size or thread pitch that could damage the bit body or fail during operation.
- UNI-5927 standard compliance means this screw is built to verified dimensional tolerances, giving you confidence that it will seat and torque correctly every time.
- Keeping a supply of these conical bearing screws on hand minimizes downtime in production or shop environments where CMT router bits with M4 retention screws are used regularly.
Specifications
- Manufacturer Part Number: 990.014.00
- Brand: CMT Orange Tools
- Description: SCREW FOR BEARING STEI CONICAL M4x4mm UNI-5927
- Small Diameter: M4x4mm
- Screw Type: STEI Conical
- Standard: UNI-5927
- Status: Active
Frequently Asked Questions
What is this screw used for?
This STEI conical screw is used for bearing retention on CMT router bits and cutter heads that use M4 retention screws. It holds the bearing securely in place during routing operations.
What does the UNI-5927 standard mean for this screw?
UNI-5927 is a recognized industrial fastener standard that defines precise dimensional requirements. Compliance with this standard means the screw is manufactured to consistent tolerances, ensuring proper fit and reliable performance in compatible CMT tooling.
How do I know if this screw fits my CMT router bit?
This screw is compatible with CMT router bits and cutter heads that use M4 x 4mm bearing retention screws conforming to the STEI conical and UNI-5927 specification. Check your existing screw or your CMT router bit documentation to confirm the M4 x 4mm thread size is required before ordering.
What does the conical STEI design provide compared to a standard screw?
The conical geometry of the STEI design allows the screw to draw the bearing tight and centered as it seats, reducing bearing play and helping to minimize vibration during routing - which contributes to more accurate cuts and longer tool life.
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