125mm Tool Extension DIN 377 4-Sq 7mm Zinc M12 - TECWERK

Benefit from a robust, zinc-plated extension bar built to DIN 377 with an M12 thread for secure fitting; its 125 mm length improves access and control when working with manual taps and hand reamers. Order directly via Metav Werkzeuge or consult the advisers for specification guidance.

Tool extension DIN 377 (4-square 7 mm, zinc) – TECWERK

A Tool extension DIN 377 (4-square 7 mm, zinc) designed for hand taps and hand reamers to extend reach and improve leverage in manual threading operations

• Compatible with DIN 377 standard
• M12 threaded connection for secure mounting
• Zinc-plated for corrosion resistance
• 125 mm overall length for extended reach

Secure, standard-compliant performance for manual threading

The extension is manufactured to DIN 377, ensuring compatibility with established manual tapping systems and hand reamers. The 4-square 7 mm drive provides a positive engagement that reduces slippage and run-out, which translates into more accurate thread starts and fewer damaged tools. With the M12 thread, the connection remains stable under torque, promoting consistent results during repetitive manual operations. This combination of standards-based design and secure mounting supports efficient workshop processes and reduces rework.

Built to resist workshop wear and environmental effects

A zinc-plated surface treatment protects the component against corrosion and surface wear common in busy shops. The base zinc material, paired with the plating, offers a balance between durability and cost-effectiveness so maintenance intervals are extended and replacement frequency is lowered. The protective finish also aids in smooth insertion and removal, helping to maintain the integrity of both the extension and the mating screw tool over time, which supports continuous production with less downtime.

Practical reach and straightforward use for everyday operations

At 125 mm overall length the extension provides additional reach for taps and hand reamers in deeper or awkward bores, improving ergonomics and control during the tapping cycle. The simple, standardised geometry—square drive to DIN 10 and ISO—facilitates quick tool changes and interchangeability across common tap wrenches. This reduces set-up time and keeps jobs moving, delivering a tangible productivity advantage for routine maintenance and bespoke assembly tasks. For specific compatibility questions, the TECWERK extension is suitable for a wide range of manual threading tasks and can be specified quickly via Metav Werkzeuge.

For fast specification checks and supply from Emmerich, contact Metav Werkzeuge for tailored advice on TECWERK extensions and workshop compatibility.

Technical Data

• Article number: 2000867910NW
• Description: Tool extension DIN 377, 4-square 7 mm, zinc, M12
• Brand: TECWERK

Facts

• Total length: 125 mm
• Square size: 7 mm
• Thread: M12
• Standard: DIN 377

Special features

• Material: zinc
• Zinc-plated finish
• For hand taps and hand reamers
• Square according to DIN 10 and ISO

FAQ

Is this extension compatible with standard tap wrenches?
The extension is made to DIN 377 and the 4-square 7 mm drive matches common tap wrenches and hand reamers designed to DIN 10/ISO, ensuring broad compatibility.

What is the overall length and how does it affect use?
At 125 mm overall length the extension increases reach for deeper bores and provides better leverage during manual threading, reducing awkward handling.

Does the zinc plating prevent corrosion in workshop conditions?
The zinc-plated finish on the TECWERK extension offers effective corrosion resistance for typical workshop environments and helps prolong service life.

Which thread type secures the extension to the tool?
The component uses an M12 thread for a secure mechanical connection, supporting stable torque transmission during tapping operations.

Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund