125mm Extension Bar DIN 377 For Tapping Square Zinc Plated, DIN 10 / ISO - TECWERK

Take advantage of the combination of extended reach, standardised drive geometry and corrosion protection for dependable manual tapping and reaming. Order the extension directly via Metav Werkzeuge or consult our specialists for application guidance.

TECWERK tool extension DIN 377 — 8 mm four-sided shank, zinc-plated

The TECWERK tool extension DIN 377, 8 mm is a purpose-made extension for manual tapping and hand reaming, offering a standardised four-sided shank and a 125 mm overall length for deeper or awkward access.

• DIN 377 compliant tool extension
• 8 mm four-sided shank to DIN 10
• 125 mm overall length for deeper reach
• Zinc material with zinc-plated finish

Reliable fit for manual tapping and reaming

This extension is designed for secure use with hand taps and hand reamers, providing a standard interface that reduces wobble and improves control. By complying with DIN 377, the device ensures compatibility with common tap wrenches and holders; the 8 mm four-sided shank engages positive drive faces to transfer torque effectively. The practical consequence is fewer slippages during manual operations and more consistent thread starts in production or repair tasks.

Why the four-sided shank matters for workshop use

The four-sided shank specified to DIN 10 offers a direct mechanical coupling that resists rotation between tap and driver. Compared with round or tapered adapters, the square profile delivers reliable torque transfer and repeatable alignment, which is particularly advantageous when working with small-diameter taps or when precise hand control is required. This reduces the risk of cross-threading and supports safer, faster manual tapping cycles.

Corrosion protection that keeps tools serviceable

The extension is supplied with a zinc-plated surface that contributes to long-term corrosion resistance in busy workshop environments. A protective coating slows surface oxidation and helps keep the driving faces and seating areas free from rust, enabling consistent engagement and simple maintenance. For periodic care, a light cleaning and lubrication of connection faces is sufficient to maintain performance.

Practical advantages of the 125 mm overall length

An overall length of 125 mm provides additional reach for tapping deeper bores or accessing recessed components without the need for special adapters. This extended reach improves workflow efficiency by reducing tool changes and enabling operations in fixtures or assemblies where a standard-length driver would be too short. The length also offers better leverage for manual operations while remaining compact enough for handheld use.

Materials and workshop compatibility

Constructed from zinc with a zinc-plated finish, the extension balances corrosion protection with economical production. The specification makes it suitable for general workshop and light industrial use where manual threading and reaming are frequent. Its standard geometry supports a range of materials and hand-tool workflows, allowing workshops, maintenance departments and trade professionals to centralise equipment and reduce inventory complexity.

Integration into everyday processes and quality assurance

Using a standardised extension simplifies tooling lists and supports predictable results across shifts and operators. The compliance with DIN 377 means repeatable mating with common tap holders and wrenches, contributing to a stable production flow and reduced rework. Technical advice is available from Metav Werkzeuge if additional assurances are required for specific materials or unusual applications.

Order the TECWERK tool extension via Metav Werkzeuge for reliable manual tapping and reaming tasks; Metav Werkzeuge provides expert application support and can be reached at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical Data

• Article number: 2000867911NW
• Manufacturer: TECWERK
• Material: Zinc
• Standard: DIN 377
• Overall length: 125 mm
• Application: for hand taps and hand reamers
• Shank: 8 mm four-sided shank to DIN 10 and ISO
• Packaging unit: 1

Facts

• Shank diameter: 8 mm
• Length: 125 mm
• Standard: DIN 377

Special features

• Zinc material
• Zinc-plated finish
• Four-sided shank to DIN 10 and ISO
• For manual tapping and hand reaming

FAQ

Is this extension compatible with standard tap wrenches?
The extension is manufactured to DIN 377 and fits standard tap wrenches that accept an 8 mm four-sided shank, ensuring direct compatibility.

Can the extension be used with both hand taps and hand reamers?
Yes, the design is intended for use with hand taps and hand reamers, providing a stable drive connection for manual threading and finishing.

What corrosion protection does the extension provide?
The item has a zinc-plated finish which offers basic corrosion resistance suitable for normal workshop environments; periodic cleaning and light lubrication prolong service life.

What is the overall length and how does it affect reach?
The overall length is 125 mm, giving increased reach for deeper holes and improved access in recessed or clamped assemblies.

Which standards and dimensions are referenced for the shank?
The shank is a four-sided 8 mm profile made to DIN 10 and ISO-compatible dimensions to ensure a positive drive and interchangeability.

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