20-50mm Three-Point Extension M14x0.75 For Internal Measuring Screws, 150xØ16.7 - Metav IndustryLine

Take advantage of precise compatibility and extended reach: the M14x0.75 threaded extension increases internal measuring range for 20–50 mm applications while keeping a compact 150×Ø16.7 geometry and a manageable weight of 1.3 kg for stable handling. Order the extension directly via Metav Werkzeuge or ask our consultants if needed.

Extension for three-point internal micrometre M312.672 — M14x0.75, 150×Ø16.7

The M312.672 extension for three-point internal micrometres (series 312.676) increases measuring reach for internal diameters from 20 mm up to 50 mm while maintaining secure M14x0.75 thread compatibility

• M14x0.75 thread for secure fitting
• Extends reach for 20–50 mm internal measures
• Robust 150×Ø16.7 extension geometry
• Compact 1.3 kg weight for stable handling

Extend internal reach without compromising accuracy

This accessory is designed as a precision extension for three‑point internal micrometres and enables measurements that would otherwise require multiple tool changes. The M14x0.75 thread ensures a firm mechanical connection to compatible instruments in the same series, so the measuring head alignment is preserved and the operator retains the original contact geometry. For workshop workflows this means fewer interruptions and a consistent measuring setup when moving between 20–50 mm internal diameters.

Seamless compatibility with workshop instruments

Compatibility with the specified micrometre series and the standard M14 thread minimises setup time and reduces the risk of mismatched parts. The 150×Ø16.7 extension geometry provides an extended probing length while remaining slim enough for confined bores. The modest mass of 1.3 kg contributes to stable handling and reduces vibration transmission, which supports repeatable results in routine quality checks. This accessory integrates into existing measuring rigs without needing additional adapters.

Designed for repeatable workflows and easy inventory control

By keeping the mechanical interface standardised, the extension helps preserve calibration status and traceability within the measurement chain. The simple, defined geometry supports reproducible mounting and repeat readings, which benefits shop‑floor quality control and batch inspection. The accessory is identified as SKU M312.672 and carries a clear GTIN for stock management, simplifying procurement and traceability across supply and inspection processes.

For reliable extension of three‑point internal micrometre capability, contact Metav Werkzeuge to discuss ordering the Metav IndustryLine M312.672 extension with M14x0.75 fitting and confirm compatibility with existing instruments

Technical Data

• Article number: M312.672
• GTIN: 4054469120294
• Weight: 1.3 kg
• Thread: M14x0.75
• Tariff number: 90173000

Facts

• Suitable measuring ranges: 20–25 mm, 25–30 mm, 30–35 mm, 25–40 mm, 40–50 mm
• Extension geometry: 150×Ø16.7

Special features

• Accessory for three-point internal micrometres (series 312.676)
• Robust mechanical connection for repeatable mounting
• Category: Accessory (measuring instruments)

FAQ

Is the extension compatible with other three-point internal micrometre series?
The extension M312.672 is specified for the series 312.676 and uses an M14x0.75 thread; compatibility with other series depends on identical thread and mounting geometry.

What measuring ranges does the extension cover?
Used as intended, the extension supports internal measurements across the nominal ranges listed (20–50 mm) when fitted to the appropriate three‑point micrometre.

How does the extension affect measurement repeatability?
When properly mounted on a compatible instrument, the extension preserves the contact geometry and contributes to repeatable readings by maintaining a secure mechanical interface.

Does the accessory come with a stock-keeping identifier for procurement?
Yes, the accessory is supplied as SKU M312.672 and includes a GTIN (4054469120294) for straightforward inventory management.

What is the physical form factor of the extension?
The extension has a defined geometry of 150×Ø16.7 and a compact mass of 1.3 kg to balance reach and handling stability.

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