Product Description
CMT 552-EX16 Adaptor for Center Drills with Hexagonal Shank is a precision-engineered hexagonal shank adapter designed to connect center drills and large diamond hole saws to electric drills and compatible power tools. Featuring a 5/8"-11 UNC thread and an M16 shank, this adapter bridges the gap between your cutting accessories and your drill, making it a practical solution for professional tile setters, stone fabricators, and construction tradespeople who need reliable, secure tool connections. It delivers consistent performance across multiple setups or job sites.
Key Features
- 5/8"-11 UNC hexagonal shank thread - provides a secure, standardized connection to electric drills and compatible power tools, reducing vibration and improving cutting accuracy during demanding applications.
- M16 shank sizing - matches the larger CMT 552 diamond hole saw series, ensuring a precise and stable fit that minimizes wobble and extends the life of both the adapter and the cutting tool.
- Hexagonal shank geometry - prevents slipping within the chuck, delivering positive torque transfer so the adapter stays locked in place even under heavy rotational loads.
Why This Product
- The 5/8"-11 UNC threading is a widely used standard for larger power tool accessories, meaning this adapter is compatible with a broad range of electric drills already in use on professional job sites.
- The hexagonal shank design eliminates chuck slip, a common problem with round-shank adapters, so users maintain consistent drilling speed and directional control throughout the cut.
- The M16 shank specification aligns directly with the CMT 552 series, making this the purpose-matched adapter for that system rather than a generic workaround that may compromise fit or performance.
Specifications
- Manufacturer Part Number: 552-EX16
- Type: Adaptor for Center Drills
- Shank Style: Hexagonal
- Thread: 5/8"-11 UNC
- Shank Size: M16mm
- Pack Quantity: 1
Frequently Asked Questions
What thread size does the CMT 552-EX16 adapter use?
The CMT 552-EX16 uses a 5/8"-11 UNC thread, which is a standard thread specification for larger electric drill spindles and compatible diamond hole saw accessories.
What shank size does this adapter accommodate?
This adapter features an M16mm shank, designed to work with center drills and the CMT 552 series of diamond hole saws that use an M16 connection.
Why is a hexagonal shank preferred over a round shank for this type of adapter?
A hexagonal shank locks positively into the drill chuck and resists rotation under torque, which means the adapter will not slip or spin freely during drilling - especially important when working with large-diameter hole saws on hard materials.
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