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The SANDVIK COROMANT 6385565 is a key drive tool key designed for seating and securing indexable inserts in compatible cutting tool holders. This small but critical accessory ensures proper torque transfer when tightening insert screws, reducing the risk of insert movement or damage during setup. Measuring 3.54 inches in length, 1.18 inches in width, and 0.25 inches in height, it is a compact, purpose-built hand tool. Weighing 0.25 pounds, it is sized for single-handed use at the machine. Machinists and toolroom technicians rely on this key for consistent insert changes on indexable milling, turning, and boring tooling systems.
This key drive is suited for use in production machining environments, toolrooms, and CNC setup applications where indexable insert tooling is regularly serviced. It is the correct tool for tightening or loosening the proprietary insert-retention screws found on SANDVIK COROMANT indexable tool holders. Sold individually, it is appropriate as both an original equipment accessory and a replacement for a lost or worn key. It is commonly kept at the machine tool or in a toolroom service kit for fast insert changes during production runs.
Designed as an OEM-style accessory key for SANDVIK COROMANT indexable insert tooling systems requiring a key drive interface for insert screw tightening.
This key is used by machinists and toolroom technicians during indexable insert changes on compatible tool holders. Before changing inserts, ensure the spindle is stopped, the machine is in a safe state, and the workpiece is secured. Use the key to apply controlled, steady torque to the insert screw — do not use extensions or additional leverage on the key. Follow the tool holder manufacturer's insert-seating procedure to ensure proper contact between the insert and pocket.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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