6mm ER16 Collet With 4.9mm Internal Square, 15µm Runout, 27.5mm Length - TECWERK

Combine 15 µm runout accuracy with a 6 mm clamping diameter and a 4.9 mm internal square for reliable tapping: an efficient choice for precision tapping and general clamping tasks — order directly via Metav Werkzeuge or consult our specialists for compatibility advice.

ER16-GB collet, clamping diameter 6 mm, internal square 4.9 mm (TECWERK)

An ER16-GB collet engineered for secure clamping and tapping operations in ER-style tap and collet chucks.

• Precise 15 µm runout accuracy
• Integrated internal square for tapping
• Compact length of 27.5 mm for stable engagement
• Compatible with ER-type tap and collet chucks

Precision that reduces rework and scrap

The core advantage of this clamping sleeve is its runout accuracy of 15 µm, which directly lowers the risk of misaligned threads and premature tool wear. High concentricity is essential when performing tapping or finishing operations: less deviation in rotation means cleaner threads and fewer rejects. For production environments that demand repeatable results, the combination of 15 µm tolerance and a standard ER interface improves throughput and reduces the need for secondary corrections, supporting a more efficient machining cycle.

Designed for tapping with an internal square

This GB-type collet includes an internal square (4.9 mm) specifically to engage taps securely during thread cutting. The internal drive prevents slippage of the tap while transmitting torque more reliably than a plain bore. Compliant with DIN 6499, the design ensures standardised fit and predictable behaviour in dedicated tap chucks and ER collet holders. The 6 mm clamping diameter together with a 27.5 mm overall length provides sufficient engagement for most common tapping tasks, combining stability with compactness for use in confined toolholders.

Easy integration into ER systems and reduced downtime

As a Type ER-GB clamping component, this item fits established ER systems and can be swapped into existing ER16 holders without special adapters, simplifying inventory and tool change routines. The compact design and standardised interface shorten setup times and support fast changeovers on the shop floor. Presented as a dependable accessory from TECWERK, the collet offers practical performance advantages for workshops and light industrial applications that prioritise repeatability and ease of use.

Contact Metav Werkzeuge for availability, technical compatibility checks and procurement assistance — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss how the TECWERK ER16-GB collet suits current setups

Technical data

• Article number: 2000834957NW
• Type: ER16-GB
• Description: ER16-GB collet, clamping diameter 6 mm, internal square 4.9 mm, TECWERK
• Product type: Collet GB
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Clamping range: 6 mm
• Clamping diameter (d): 6 mm
• Runout accuracy: 15 µm
• Length (L): 27.5 mm
• Internal square: 4.9 mm

Special features

• Type ER-GB according to DIN 6499
• Internal square for tapping operations
• Fits ER-type tap and collet chucks
• Compact design for stable engagement

FAQ

What runout tolerance can be expected from this collet?
The collet delivers a runout accuracy of 15 µm, which helps to maintain concentricity during tapping and reduces the risk of thread defects.

Is this collet suitable for tapping operations?
Yes. The ER16-GB unit features an internal square of 4.9 mm specifically intended to drive taps securely for reliable thread cutting.

Which chucks does the collet fit?
The product is designed for ER-type tap and collet chucks and follows the ER16 form factor specified in the technical data.

What are the key dimensions to consider when replacing an existing collet?
Key dimensions are the 6 mm clamping diameter, 27.5 mm overall length and the 4.9 mm internal square — verify these against the current holder before replacement.

Can the TECWERK ER16-GB (SKU 2000834957NW) be used as a direct replacement for standard ER16 collets?
In most ER16 holders, yes — the ER-GB variant is intended to match ER16 interfaces while providing the internal square for tapping; confirm holder compatibility where unusual toolholders are used.

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