Description
Clamp tooling securely into vertical mill quills to ensure accurate concentricity. The Magnum R8COL516 locks straight-shank cutting tools tightly during high-speed machining tasks.
Features
- Machine Fit – Standard R-8 design engineered for draw bolt mill spindles.
- Concentric Holding – Delivers a reliable uniform grip across the tooling shank diameter.
Specifications
- Holding Capacity: 5/16″
- Spindle Connection: R-8
- Supplier Part Number: MAG-R8COL516
- KMS Product Code: MAG-R8COL516
Common Shop Applications
- Securing 5/16″ end mills in milling machine quills.
- Holding rigid setup bars or edge finders during workpiece positioning.
Recommended Shop Add-Ons
- Ensure correct retention with an R8 Drawbar.
- Expand your setup with a 5/16 End Mill.
Frequently Asked Questions
Q: What drawbar thread does this collet utilize? A: It features the standard 7/16″-20 UNF internal thread configuration common to R-8 tooling.
Q: Can I clamp a metric shank bit inside this collet? A: No, tool shanks must strictly match the imperial 5/16″ designation to prevent internal distortion.









