ER 40 Collet Wrench For ER/ESX Nuts Hardened Zinc Plated With Hanging Hole - TECWERK

Take advantage of the combination of precise clamping, robust construction and practical workshop handling for reliable production processes; order directly via Metav Werkzeuge or consult our specialists for tailored advice.

Collet spanner ER No.250, size ER 40 – hardened, zinc-plated (TECWERK)

The Collet spanner ER No.250 (ER 40) is a workshop tool for secure tightening of ER / ESX collet nuts to DIN 6499, designed for routine machining and maintenance tasks.

• Secure clamping for ER / ESX collet nuts
• Hardened special steel for long service life
• Zinc-plated finish and hanging hole for storage

Precision clamping that protects toolholders and workpieces

The wrench is engineered for secure clamping of ER 40 collet nuts in conformity with DIN 6499, which ensures consistent axial force transmission and repeatable holding performance. Where a collet nut joins the toolholder to the tool shank, correct tightening prevents slippage and run-out; the spanner's geometry is matched to this function. As a workshop implement, it supports process stability by reducing rework and machine downtime through reliable torque transfer during assembly and maintenance.

Robust materials for daily workshop demands

Manufactured from special steel that is hardened and zinc-plated, the key offers high wear resistance and basic corrosion protection suited to busy shop floors. Hardening increases resistance to deformation under load, while the zinc-plated surface reduces the risk of surface corrosion in humid environments. The resulting combination prolongs service life and keeps calibration intervals and unexpected tool replacement to a minimum, contributing to predictable operating costs and uninterrupted production rhythms.

Practical design to speed up everyday handling

The compact form and integrated hanging hole enable tidy storage close to machining stations, reducing search times and improving workflow ergonomics. Supplied as a single unit, the tool is ready for immediate use and simple to integrate into a set of hand tools or a tool trolley. Clear, maintenance-friendly surfaces mean occasional cleaning is sufficient to maintain functionality, which supports fast tool changes and a more efficient workshop routine.

For procurement or technical advice on the TECWERK Collet spanner ER No.250, contact Metav Werkzeuge in Emmerich for personalised guidance and prompt supply via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 4000832446NW
• Product: Collet spanner ER No.250
• Brand: TECWERK
• Packing unit: 1

Facts

• Size: ER 40

Special features

• Secure clamping of ER / ESX collet nuts to DIN 6499
• Made from hardened special steel
• Zinc-plated finish
• Hanging hole for workshop storage

FAQ

Is the spanner suitable for ER 40 collet nuts?
Yes. The TECWERK Collet spanner ER No.250 is specifically sized for ER 40 and made for tightening ER / ESX collet nuts to DIN 6499 (Article number 4000832446NW).

What is the tool made from and how durable is it?
The spanner is manufactured from special steel, hardened for wear resistance and zinc-plated to provide basic corrosion protection, giving a durable service life in workshop conditions.

How should the spanner be stored between uses?
Use the integrated hanging hole to store the spanner on a pegboard or tool rail in a dry place; regular cleaning after use keeps the zinc-plated surface in good condition.

Can this tool withstand frequent industrial use?
The combination of hardened material and robust finish makes the spanner suitable for regular workshop and light industrial environments where reliable clamping of collet nuts is required.

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