Product Description
CMT Screw for Bearing STEI M6 x 6mm Uni-5923 is a precision replacement fastener designed to secure bearings on CMT router bits and cutter heads. Conforming to the Uni-5923 standard, this M6 x 6mm STEI screw delivers a reliable, thread-matched fit that keeps bearings properly seated during demanding routing operations - reducing the risk of bearing movement, vibration, or premature wear. Whether you are servicing a professional cutter head or restoring a router bit to full working condition, having the correct bearing retention screw on hand means less downtime and more consistent cutting performance.
Key Features
- M6 x 6mm STEI thread specification - matches the exact thread form and depth required for CMT bearing retention, ensuring a secure and precise fit without over-tightening or stripping
- Uni-5923 standard compliance - conforms to an established Italian industrial fastener standard, meaning dimensional consistency you can rely on for repeatable, safe bearing assembly
- Purpose-built bearing retention screw - engineered specifically to hold bearings in place on CMT router bits and cutter heads, preserving the integrity of the cutting tool and extending its usable life
- Compact 6mm length - sized to fit within the shallow bearing pocket geometry typical of CMT tooling, preventing interference with adjacent components while maintaining a firm hold
Why This Product
- Using the correct OEM-specification screw - M6 x 6mm, Uni-5923 - eliminates the guesswork of finding a substitute fastener that may not seat properly or meet the torque requirements of bearing retention
- A properly secured bearing is essential for smooth, chatter-free cuts - this screw is the component that holds everything in alignment, making it a critical part of any router bit or cutter head service
- Sourcing a replacement screw matched to the CMT RPRC (replacement part) category means you are getting a part intended for exactly this maintenance purpose, not a generic hardware substitute
- Keeping this screw on hand as a spare part allows for fast field replacement, so a loose or damaged bearing fastener does not take a router bit out of service longer than necessary
Specifications
- Manufacturer Part Number: 990.117.00
- Brand: CMT Orange Tools
- Description: SCREW FOR BEARING STEI M6x6mm UNI-5923
- Small Diameter: M6x6mm
- Product Class: RPRC
- Status: Active
Frequently Asked Questions
What is this screw used for?
This screw is a bearing retention fastener designed to hold bearings securely on CMT router bits and cutter heads. It is a replacement part intended for servicing CMT tooling that uses M6 STEI screws.
What does the Uni-5923 designation mean?
Uni-5923 refers to an Italian industrial standard that defines the dimensional and thread specifications for this type of fastener. Compliance with this standard ensures consistent sizing and reliable fit when assembling or reassembling CMT bearing components.
How do I know if this screw fits my CMT router bit or cutter head?
This screw is compatible with CMT router bits and cutter heads that require an M6 x 6mm STEI bearing retention screw. Check your existing tooling for the M6 thread size and STEI drive type to confirm compatibility before installation.
Is this an active CMT replacement part?
Yes, the CMT 990.117.00 has an active product status, meaning it is a current replacement part available for servicing CMT tooling - not a discontinued or legacy item.
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