2.8mm x 2.1mm Quick-Change Insert SE for DIN 371/374/376, L3 4mm L4 21.5mm - TECWERK

The combination of a compact 2.8 mm cutting interface, a robust 2.1 mm shaft square and direct torque transmission ensures fast tool changes and reliable tapping performance in small-thread applications; order the insert directly via Metav Werkzeuge or ask their consultants for compatibility advice.

Quick-change insert SE 2.8 mm x 2.1 mm (Size 1) — TECWERK quick-clamp insert for DIN taps

The Quick-change insert SE 2.8 mm x 2.1 mm is a size 1 insert designed to hold thread taps in quick-clamping adaptors, suitable for standard small-thread sizes specified in DIN 371 and DIN 374/376.

• Quick-change design for fast tool swaps
• Torque transmitted via shaft square 2.1 mm
• Compatible with DIN 371 M2–2.5 and DIN 374/376 M4
• Compact size 2.8 mm diameter, L4 21.5 mm

Precision and compatibility for small-thread tapping

This quick-clamping insert delivers a compact solution for precise tapping tasks in restricted spaces. Built for compatibility with common small-thread standards, the insert matches taps to the DIN 371 M2–2.5 and DIN 374/376 M4 families, which makes it suitable for detailed assembly and repair work. The compact 2.8 mm diameter and the defined dimensions (notably L4 21.5 mm) ensure consistent axial positioning in the clamping adaptor, reducing misalignment and minimising the risk of tap breakage. The result is measurable time savings in changeovers and fewer rejects in repetitive production sequences.

Engineered for direct torque transmission and reliable holding

Constructed for direct power transfer, the insert transfers torque through the 2.1 mm shaft square, avoiding intermediate coupling losses. The design intentionally excludes a safety clutch (without safety clutch), which maintains a rigid connection between tool and holder for applications where slip would negatively affect thread quality. The taps themselves are secured in the insert by the quick‑clamping mechanism, so the operational principle is simple: secure the tap, engage the quick clamp and transmit torque through the square shank. This clear mechanical chain supports repeatable torque delivery and predictable performance in precision tapping operations.

Workshop workflow advantages and supply reassurance

Using standardised quick-change inserts simplifies inventory and tool management: different shank sizes simply require the corresponding insert type, allowing workshops to cover a range of tap shank formats without bespoke adaptors. The compact geometry of the unit reduces handling time during threading operations and lends itself to automated sequences where rapid exchange is essential. Metav’s role as a precision partner strengthens this workflow: central supply from Emmerich and a broad product range minimise procurement complexity while offering access to technical guidance when integrating the insert into existing quick-clamp systems.

Discuss technical fitment and secure supply through Metav Werkzeuge for TECWERK quick-change inserts dispatched directly from Emmerich.

Technical data

• Article number: 4000832633NW
• Product type: Quick-change insert SE
• Brand: TECWERK
• Type: Size 1
• Suitable for: DIN 371 M2–2.5; DIN 374/376 M4
• Packaging unit: 1

Core dimensions

• Diameter: 2.8 mm
• Shaft square: 2.1 mm
• L1: 18.5 mm
• L3: 4 mm
• L4: 21.5 mm
• L5: 7 mm
• D: 30 mm
• D1: 19 mm

Special features

• Without safety clutch
• Inserts hold taps via quick-clamping device
• Torque transmission via shaft square
• Different shank sizes require corresponding inserts

FAQ

How does this insert secure thread taps in the quick-clamping system?
The Quick-change insert SE 2.8 mm x 2.1 mm secures taps by the quick-clamping device; the tap shank is clamped inside the insert and torque is transmitted via the 2.1 mm shaft square.

Which tap sizes are compatible with this insert?
Compatibility is specified for DIN 371 M2–2.5 and DIN 374/376 M4, meaning the insert is intended for the small-thread tap sizes covered by those DIN designations.

Is there a safety clutch included with the insert?
The design is specified without safety clutch, providing a rigid connection for applications where consistent torque transfer and minimal slip are required.

What are the key dimensions to check when selecting a matching insert?
Important dimensions include the 2.8 mm diameter, the 2.1 mm shaft square and the axial measures such as L4 21.5 mm; refer to SKU 4000832633NW for exact sizing.

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