Screwdriver Bit Wera Torx 867/4 IMP DC T20 alloy steel diamond coated

Wera Torx bit 867/4 IMP DC T20 is a precision screwdriver bit designed for Torx T20 fasteners. Manufactured from alloy steel with a diamond-coated tip, this bit is intended for use with impact drivers that accept the IMP interface. The diamond coating on the tip increases friction with the screw head to reduce cam-out and improves wear resistance for longer service life under frequent or high-torque use.

Advantages

The alloy steel construction provides strength and toughness for repeated impact use, while the diamond coating enhances grip on Torx recesses and minimizes slippage during torque application. The IMP-compatible geometry ensures secure seating in compatible impact driver chucks, allowing efficient torque transfer. The compact design and standardized T20 profile make the bit interchangeable with other Torx tools and suitable for precision work where accurate engagement is required.

Suitable for

• Driving and removing Torx T20 screws in metal and wood components
• Use with impact drivers featuring the IMP interface
• Assembly and maintenance tasks in workshops and construction where reduced cam-out is important
• DIY projects requiring durable bits with improved wear resistance

Key specifications

• Tip profile: Torx T20
• Material: alloy steel body
• Tip finish: diamond-coated for enhanced grip
• Interface: IMP-compatible for impact driver use
• Intended use: impact fastening and general Torx screw driving

How to use

Insert the bit securely into an impact driver that supports the IMP interface, ensuring the bit seats fully in the chuck. Select the appropriate torque and speed settings for the material and screw size, and align the bit with the Torx recess before applying power. Apply steady pressure while operating the impact driver to maintain engagement and minimize slipping. After use, inspect the diamond-coated tip for wear and replace the bit if the profile becomes rounded or damaged.

Usage recommendations

For optimal performance, match the T20 bit to the correct Torx screw size and avoid excessive side loading. Use appropriate torque settings for the workpiece material, and store the bit in a dry place to prevent corrosion of the alloy-steel body.