110mm Extension Bar DIN 377 Square Shank Zinc Coated, For Hand Taps M4.5–8 - TECWERK

Take advantage of the combination of DIN 377 compliance, robust zinc-plated construction and a 110 mm reach for reliable tapping and reaming operations; order directly via Metav Werkzeuge or consult our specialists for precise application advice.

Tool extension DIN 377 — square shank 4.9 mm, zinc-plated (TECWERK)

A tool extension designed for use with hand taps and hand reamers, compliant with DIN 377 and finished in zinc for corrosion resistance.

• DIN 377 standard compliance
• For hand taps and hand reamers
• Zinc-plated for corrosion protection
• 110 mm overall length for extended reach

Built for standardised, reliable tapping operations

The Tool extension DIN 377 offers stable compatibility with tooling systems that follow the DIN 377 specification. Conformance to DIN 377 and a square shank manufactured to DIN 10/ISO dimensions ensures secure seating in manual tap wrenches and holders. This standardisation reduces runout and wobble during hand tapping and reaming, which translates into fewer thread defects and less rework. The result is a measurable improvement in process reliability and part quality for workshops and maintenance teams.

Durable finish to limit corrosion and extend service life

A zinc-plated surface provides a protective layer against moisture and workshop contaminants, preserving the tool's functional surfaces and reducing the need for frequent replacement. The choice of zinc as the declared material and finish supports longer intervals between tool changes and maintains consistent performance in everyday industrial environments. This robustness contributes directly to lower downtime and predictable maintenance schedules in production and repair settings.

Practical reach and secure engagement for tight operations

With an overall length of 110 mm, the extension delivers additional reach where access is restricted or when tapping recessed holes. The nominal square size of 4.9 mm is specified for secure clamp engagement and torque transmission, catering to common thread sizes indicated in the product data (M4.5–M8). The straightforward geometry and standard interfaces simplify setup and minimise handling time, enabling faster cycle turnaround for manual tapping and finishing tasks.

Suitable for workshops, service engineers and production lines

The accessory is a pragmatic choice for craft workshops, service engineers and small-series production, where compatibility with established tooling standards matters. The compact, standard-compliant design supports easy integration into existing tool kits and reduces the need for multiple specialised holders. Backed by clear technical conformity and a corrosion-resistant finish, the extension supports consistent results and is a dependable addition to a practical workshop inventory.

For application guidance or to secure TECWERK quality components quickly from our European supply network, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone on +49 2822 7131930 for tailored advice and fast dispatch

Technical Data

• SKU: 2000867907NW
• Item: Tool extension DIN 377 4KT 4.9 mm zinc M4.5–8 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1
• UID: 2000867907NW

Facts

• Overall length: 110 mm
• Square shank: 4.9 mm
• Thread range reference: M4.5–M8

Materials & Standards

• Material: zinc (zinc-plated finish)
• Standard: DIN 377
• Square according to DIN 10 and ISO

FAQ

Is this extension compatible with standard hand tap wrenches?
Yes. The extension is manufactured to DIN 377 dimensions and the square shank matches DIN 10/ISO sizes, allowing secure fitting in standard hand tap wrenches and holders.

Which tooling types is the extension intended for?
The extension is intended for use with hand taps and hand reamers and is suited to manual tapping and reaming tasks within the specified thread range.

How does the zinc finish affect maintenance?
The zinc-plated finish on the TECWERK extension provides basic corrosion protection, reducing the frequency of cleaning and replacement compared with untreated components.

What reach advantage does the product offer?
With an overall length of 110 mm, the extension provides additional access for recessed or hard-to-reach holes, simplifying manual operations and improving ergonomics.

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