Mr. Lugnut Spline Adapter Keys – Passenger (TK640) are designed to work with Mr. Lugnut 6-spline tuner Lugnuts, providing an added layer of security for your wheels. These deep well spline keys help prevent unauthorized removal of your wheels, ensuring your investment stays protected. The adapter keys are built for long-lasting performance.
Their 2.700-inch length allows easy use with both 13/16 in. and 7/8 in. socket drive applications, offering versatility for various vehicle types. Perfect for passenger vehicles, these spline adapter keys are a must-have for added wheel security.
- Specifications and Dimensions
- Length: 2.700 inches
- Socket Drive Size: 13/16 in. and 7/8 in.
- Material: Steel
- Finish: Zinc plated
- Application: Mr. Lugnut 6-spline Lugnuts
- Quantity: Sold individually
- Key Features and Benefits
- Provides security for wheels by preventing unauthorized removal
- Made from durable steel with a zinc-plated finish for corrosion resistance
- Compatible with Mr. Lugnut 6-spline tuner Lugnuts
- Works with 13/16 in. and 7/8 in. socket drive applications
- Ideal for passenger vehicles












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