Torque wrench STAHLWILLE 730N/2 2–20 Nm, 9x12 mm drive

The STAHLWILLE 730N/2 torque wrench is a precision hand tool with a torque range of 2–20 Nm and a 9x12 mm drive. It is intended for controlled tightening where accurate, repeatable torque is required. The tool is suitable for delicate assemblies such as bicycle components, small engines, electronics and precision mechanical parts, offering fine adjustment across a low torque span for consistent results during assembly and maintenance.

Advantages

The torque wrench provides accurate torque application with a narrow, low-range setting from 2 to 20 Nm, enabling careful control of fastening force. Its 9x12 mm drive ensures compatibility with a range of sockets and adapters designed for small fasteners. The design supports repeatable torque settings and controlled tightening, reducing the risk of over- or under-tightening in sensitive assemblies. The tool’s construction and adjustment mechanism are built to maintain calibration and reliable performance in professional workshop environments.

Suitable for

• Bicycle assembly and maintenance (pedals, stems, seat clamps)
• Small engine and motorcycle work on low-torque fastenings
• Electronic housings and precision mechanical assemblies
• Laboratory and calibration tasks requiring fine torque control

Key specifications

• Torque range: 2–20 Nm
• Drive size: 9x12 mm
• Type: click-type adjustable torque wrench for controlled torque application
• Adjustment increment: fine adjustment suitable for low-torque settings
• Intended use: manual hand tool for assembly, maintenance and precision tightening

How to use

Select the required torque value within the 2–20 Nm range and set the wrench according to the manufacturer’s adjustment method, ensuring the scale and locking mechanism are engaged if present. Fit the appropriate socket or adapter to the 9x12 mm drive, position the wrench squarely on the fastener, and apply steady force until the wrench signals that the set torque is reached. Use controlled movements and avoid sudden impacts; if performing multiple fastenings, check settings periodically and re-lock the scale after adjustment.

Usage recommendations

For reliable results, calibrate the torque wrench at regular intervals according to workshop practices, avoid using the tool as a breaker bar, and store it with the torque set to the lowest value to preserve mechanism integrity. Use sockets and adapters compatible with the 9x12 mm drive and follow component torque specifications when working on bicycles, engines, or electronics.