Torque screwdriver Wera 7400 3–6 Nm — adjustable torque 3 to 6 Nm, manual precision tool

The Wera 7400 torque screwdriver offers adjustable torque control in the 3–6 Nm range for precise manual tightening of fasteners. This compact precision tool is intended for tasks that require repeatable torque application to avoid over‑tightening and component damage. Its simple adjustment mechanism and clear torque range make it suitable for assembly, maintenance and electronics work where moderate torque values are needed.

Advantages

The adjustable torque setting between 3 and 6 Nm allows consistent application of the required tightening force, reducing variability between operators. The screwdriver’s compact, hand‑held design provides good control in confined spaces and on bench work. Mechanical torque limiting prevents exceeding the set value, protecting threads and components. The tool’s straightforward construction supports reliable performance with minimal maintenance.

Suitable for

• Assembly operations requiring repeatable moderate torque
• Maintenance and repair tasks on mechanical and electromechanical equipment
• Electronics and small appliance work where controlled tightening is necessary
• Workshop and field service jobs demanding portable precision torque control

Key specifications

• Torque range: adjustable 3 to 6 Nm
• Operation: manual, precision torque screwdriver
• Function: mechanical torque limitation for repeatable torque application
• Design: compact, hand‑held tool suitable for bench and field use

How to use

Set the desired torque within the 3–6 Nm range using the adjustment mechanism according to the fastener manufacturer’s specification or the relevant assembly instruction. Apply the screwdriver to the fastener and tighten until the torque‑limiting mechanism triggers, indicating the set torque has been reached. Use steady, controlled rotational motion and avoid applying excessive additional force after the mechanism releases. Verify torque settings periodically to ensure consistent performance.

Usage recommendations

Use the Wera 7400 torque screwdriver for jobs where moderate, repeatable torque is required; match the set torque to the component specifications, keep the tool clean and store it dry to maintain accuracy, and periodically check calibration if used in critical assemblies.