6/8, 8/10, 10/12 Three-Point Extension M5 x 0.5 mm, 50xØ5.7 - Metav IndustryLine

Take advantage of the simple M5-threaded interface and compatibility with small-bore internal gauges to extend measuring reach without altering the primary instrument; the extension combines compact design and reliable fit for consistent internal measurements. Order via Metav Werkzeuge or consult our specialists for integration advice.

Extension for three-point internal measuring device M312.670 — M5 x 0.5 mm thread, for small-bore internal measurements

The Extension for three-point internal measuring device M312.670 provides a compact reach extension for precision internal measurement tasks in metrology workshops and inspection stations.

• Threaded M5 x 0.5 connection
• Fits 6–12 mm internal measurement ranges
• Precision-machined extension for repeatable fit

Extend measurement reach without instrument swaps

The extension fits directly onto compatible three-point internal measuring assemblies and is designed to increase usable reach for small bores in a compact footprint. With a M5 x 0.5 mm thread interface the component mates to standard internal measuring heads used in series 312.674, enabling the testing chain to reach 6–12 mm bores without the need to change the core gauge. This reduces handling time and streamlines inspection workflows, delivering a rational time saving in repetitive measurement operations.

Maintain measurement integrity with a stable connection

Engineered for a secure mechanical fit, the extension adds minimal uncertainty to the measuring chain while preserving the instrument’s intention for repeatable internal checks. The modest mass (listed as 1.3 kg) and precise thread geometry help to keep the assembly stable during measurement cycles; the design supports consistent contact positioning and limits the need for additional fixturing. The result is measurable operational efficiency: fewer gauge changes and a more coherent inspection routine.

Compatible accessory for series-based internal measurement systems

Designed as an accessory for the three-point internal measuring series referenced, the component is classified as metrology equipment accessory and suits small-bore inspection tasks in toolrooms and quality control benches. The extension integrates with established three-point internal measurement workflows, offering a practical solution where increased reach or adaptivity is required. Trust in the alignment with established metrology practice and the convenience of a drop-in extension to extend capability without redesigning the measurement setup.

For precise integration and procurement of this Metav IndustryLine extension, contact Metav Werkzeuge for technical guidance and ordering at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: M312.670
• GTIN: 4054469120270
• Tariff code: 90173000

Facts

• Weight: 1.3 kg
• Thread: M5 x 0.5 mm
• SKU: M312.670

Special features

• Compatible with series 312.674
• Suitable for internal measurement ranges 6–12 mm
• Extension dimension reference: 50xØ5.7
• Category: Accessory (Measuring devices → Accessories)

FAQ

What is the primary function of this extension?
The extension increases the reach of three-point internal measuring assemblies, allowing internal checks in small bores without replacing the main measuring head; it is supplied as the Metav IndustryLine extension M312.670.

Which measurement ranges are supported?
The accessory is intended for internal measurement ranges covering approximately 6–12 mm and is compatible with heads used in series 312.674.

How is the extension connected to the measuring head?
Connection is via a standard M5 x 0.5 mm threaded interface that mates with the matching thread on three-point internal measuring devices.

Is the component suitable for production inspection routines?
Yes, the extension is designed for repeatable integration into inspection workflows and supports stable positioning for routine internal measurements.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com