Torque screwdriver Wera 7400, single torque, length 150 mm, height 100 mm

Wera 7400 single torque screwdriver with a pistol-style Kraftform handle that transfers high torque efficiently while remaining ergonomic for extended use. The tool is preset to a specific torque for consistent, repeatable results, and the torque can be adjusted within a defined measurement range. Rapidaptor quick-release technology enables fast bit changes, and the tool provides unlimited torque for loosening seized fasteners. Compatible with 1/4" hex bits to the DIN ISO 1173-C 6.3 / E 6.3 standard. Overall length approximately 150 mm, height approximately 100 mm.

Advantages

The multi-component Kraftform pistol handle combines hard and soft zones to allow high working speeds while reducing hand strain. A pre-set torque mechanism ensures the same torque is applied every time, improving repeat accuracy. Rapidaptor quick-release bit holder speeds up bit changes, and the screwdriver permits unlimited torque in the loosening direction for stuck screws.

Suitable for

• Applications requiring a constant, repeatable torque value
• Assembly tasks with 1/4" hex bits
• Work where frequent bit changes are needed
• Maintenance tasks involving seized or tight screws

When it may not be suitable

This preset torque screwdriver is not intended for precision settings outside its adjustable measurement range; for very low or very high torque requirements beyond the tool's range, select a different torque tool. It is also not a powered screwdriver and is designed for manual use only.

Key specifications

• Tool type: Single preset torque screwdriver with adjustable range
• Handle style: Pistol Kraftform, multi-component (hard and soft zones)
• Drive interface: 1/4" hexagon bit drive (DIN ISO 1173-C 6.3 / E 6.3 compatible)
• Length: approx. 150 mm
• Height: approx. 100 mm
• Rapidaptor quick-release bit change
• Unlimited loosening torque in reverse direction

How to use

Select the appropriate 1/4" hex bit and insert it into the Rapidaptor bit holder until it locks. Use the preset torque setting for tightening; the tool will slip or click (depending on model behavior) when the set torque is reached, ensuring repeatable torque application. For loosening seized screws, apply steady force in the reverse direction—the tool allows unlimited torque in that direction. Adjust the torque only within the specified measurement range following the manufacturer's instructions.

What to consider before purchase

• Verify the screwdriver's torque range matches your application requirements
• Ensure compatibility with 1/4" hex bits you plan to use
• Consider whether a manual preset torque tool suits your workflow versus a torque wrench or powered driver

Usage recommendations

Use the Wera 7400 with appropriately sized, undamaged bits and check torque calibration periodically if repeat accuracy is critical. Store the tool in a dry place to prevent corrosion and avoid forcing the tool beyond its adjustable range.