155mm Tool Extension DIN 377 Square Shank Zinc M20 - TECWERK

Take advantage of the combination of DIN 377 conformity, a zinc-plated finish and a robust M20 connection for dependable manual tapping operations; order directly via Metav Werkzeuge or consult our specialists for specification matching.

Tool Extension DIN 377 4-sided 12 mm, Zinc-plated, M20 – TECWERK

The Tool Extension DIN 377 4-sided 12 mm is a zinc-plated extension bar designed for manual tapping and hand reaming, built to DIN 377 standards for consistent workshop performance

• DIN 377 standard compliance
• Zinc-plated for corrosion protection
• 155 mm overall length for extended reach
• 12 mm square shank with M20 thread

Consistent threading through standard conformity

The DIN 377 specification ensures interchangeability and predictable behaviour when paired with compatible hand tools. Manufactured to this norm, the extension provides a standardised interface that reduces setup time and avoids mismatches in taps and reamers. Where process reliability matters, the standard compliance translates directly into fewer tool changes and less downtime, supporting a smoother production flow for small workshops and industrial maintenance teams.

Practical design that improves workshop ergonomics

A balanced overall length of 155 mm and a 12 mm four-sided shank give practical reach without sacrificing control. The zinc-plated finish offers a basic level of corrosion resistance, extending service life in humid workshop environments and reducing the need for frequent replacement. As a manual extension bar with an M20 connection, the component is optimised for hand-tapping tasks, enabling easier alignment and safer handling compared with improvised extensions.

Compatibility and straightforward application

Designed specifically for use with hand taps and hand reamers, the extension features a four-sided shank dimensioned to DIN 10 and ISO conventions, allowing it to integrate seamlessly with existing tap wrenches and handles. The combination of a standard thread and standard square ensures quick fitting and removal, supporting efficient tool changes. For operations requiring precise manual control rather than high-speed machine tapping, this robust extension provides a reliable mechanical link that preserves thread quality.

For supply enquiries or specification advice on the TECWERK tap extension, contact Metav Werkzeuge in Emmerich by email at info@metav-werkzeuge.com or by phone at +49 2822 7131930

Technical data

• Article number: 2000867915NW
• Label: Werkzeugverlängerung DIN 377 4KT 12mm Zink M20 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1
• UID: 2000867915NW

Core measurements

• Overall length: 155 mm
• Square shank: 12 mm
• Thread: M20
• Standard: DIN 377

Materials & features

• Material: Zinc
• Zinc-plated finish
• For hand taps and hand reamers
• Four-sided shank to DIN 10 and ISO
• Complies with DIN 377

FAQ

Is this extension compatible with standard hand taps? Yes. The Tool Extension DIN 377 4-sided 12 mm by TECWERK is made to DIN 377 and is compatible with standard hand taps and hand reamers designed to that norm.

What are the key dimensions and thread specification? The extension has an overall length of 155 mm, a 12 mm square shank and an M20 thread as specified in the product data.

Does the zinc-plated finish protect against corrosion? The zinc-plated finish provides a protective layer that improves resistance to corrosion in typical workshop conditions, extending the tool’s usable life.

Can this extension be used with powered tapping machines? No. This extension is intended for manual use with hand tap wrenches and hand reamers; it is not designed for high-speed machine tapping applications.

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