Stahlwille In-Hex Socket - 4mm

This socket is specifically designed for 4mm internal hexagon (In-Hex) socket screws, commonly known as Allen screws.

The drive size is 1/4 inch, making it compatible with standard 1/4" drive ratchets and extensions.

While it can technically be used with low-torque, low-speed power tools, it is primarily designed for manual use with hand tools to ensure precise control and prevent damage to the screw or tool.

An In-Hex socket is designed to fit *inside* a hexagon socket screw (Allen screw), whereas a standard hex socket is typically used on the *outside* of a hexagonal bolt or nut.

Clean with a dry cloth after use and store in a dry place. A light coat of oil can help prevent corrosion, especially in humid environments.

It is constructed from chrome alloy steel with a chrome-plated surface for durability and corrosion resistance.

The socket is built for durability, but for extremely high torque applications, always ensure your drive tool and the screw itself are also rated for that torque level. The precision fit helps prevent cam-out, which is crucial under load.

Ensure you are using the correct 4mm socket size. Verify the screw head is not damaged or stripped. Use a higher quality screw if possible.

Check for debris within the socket or screw head. Ensure the drive tool is properly aligned with the socket and screw.

Clean the affected area with a soft brush and a light oil. Wipe dry and store in a protective environment. Regular cleaning and light oiling can prevent future issues.