Torque screwdriver Wera 7400 Kraftform 105 mm

The Wera 7400 Kraftform 105 mm torque screwdriver offers adjustable single-torque settings in a compact 105 mm length. Designed in Wera's familiar ergonomic Kraftform handle, it delivers precise torque control for assembly and maintenance tasks. Measurement accuracy is ±6% according to EN ISO 6789, and the tool includes a distinct audible and tactile overload signal when the preset torque is reached. The screwdriver is supplied with a hexagonal tip and is available in a black and green handle finish.

Advantages

The adjustable torque mechanism provides reliable and repeatable torque application with ±6% accuracy as per EN ISO 6789. The ergonomic Kraftform handle improves grip and reduces fatigue during repeated use. A clearly perceptible audible and tactile signal notifies the user when the preset torque is reached. Certain model variants include a detachable magnifying glass that mounts on the scale to improve readability of the setting.

Suitable for

• Precision assembly and maintenance tasks requiring controlled torque
• Electronics and small mechanical assemblies using hexagonal tips
• Workshop and field service work where compact, repeatable torque is needed

Key specifications

• Model: Wera 7400 Kraftform
• Length: 105 mm
• Screwdriver type: Torque screwdriver (single torque)
• Tip type: Hexagonal
• Handle colour: Black, Green
• Measurement accuracy: ±6% (EN ISO 6789)
• Overload signal: Audible and tactile when preset torque reached

How to use

Set the desired torque on the scale, attach the hexagonal tip if required and place the screwdriver on the fastener. Apply steady turning force until the audible and tactile overload signal indicates the preset torque has been reached. If the model includes the magnifying glass, attach it to the scale to assist reading the setting before use. Follow appliance- or component-specific torque values to avoid over- or under-tightening.

Recommendations

Use the torque screwdriver within the specified accuracy range and regularly check calibration according to EN ISO 6789. For precision work, use the magnifying glass accessory where available and avoid sudden impacts or excessive side loads that can affect the torque mechanism.