18mm Hex Nut DIN 6331 M12 Corner Size 20.03, Strength Class 10 - AMF

Take advantage of a standardised connection that combines DIN 6331 conformity with strength class 10 performance to secure heavy-duty bolted joints; order via Metav Werkzeuge or consult our specialists for application advice.

AMF Hexagon Nut DIN 6331 M12 — SW 18 mm, Strength Class 10

The AMF Hexagon Nut DIN 6331 M12 is a high-strength fastening component for industrial assemblies and machinery where defined geometry and consistent torque transfer are required.

• DIN 6331 standard compliance
• Strength class 10 for high tensile loads
• SW 18 mm spanner width for standard tools
• Precise geometry with 20.03 mm corner measure

Engineered for dependable, high-strength joints

This component follows DIN 6331, making it suitable for applications that demand reproducible fastening behaviour. With its strength class 10 rating and M12 thread, the nut is designed for high tensile loads, delivering consistent clamping force under operational stress. The standardised specification reduces uncertainty in component selection and helps maintain assembly integrity across serial production runs.

Precision geometry that improves torque transmission

The nut’s defined dimensions — including SW 18 mm wrench size and a total height of 18 mm — ensure accurate contact with the spanner and an even load distribution across bolt faces. The documented corner measure 20.03 mm reflects controlled manufacturing tolerances, which support reliable torque application and reduce the risk of rounding or slippage during assembly. Machined surfaces contribute to predictable seating and minimal stress concentrations.

Practical benefits for procurement and assembly processes

Supplied as individual units and identified by SKU 4000833409NW, this hexagon nut streamlines inventory management for maintenance and production departments. Conformity to an established standard simplifies compatibility checks with M12 bolts and fasteners already in use. Where traceability and repeatability are priorities, the documented specification aids quality control and part reconciliation in workshop and industrial environments.

For assured high-strength fastening with the AMF hexagon nut, contact Metav Werkzeuge for product availability and specification support at info@metav-werkzeuge.com or +49 2822 7131930.

Technical Data

• SKU: 4000833409NW
• Brand: AMF
• Article type: Hexagon nut
• Standard: DIN 6331

Facts

• Thread size: M12
• Wrench width: 18 mm
• Total height: 18 mm
• Corner measure: 20.03 mm
• Packaging unit: 1

Special features

• Strength class 10
• Pressed and machined finish (as labelled)
• Designed for industrial bolted joints

FAQ

What does strength class 10 indicate for this nut?
The strength class 10 rating for the AMF hexagon nut signifies a high tensile capability suitable for demanding bolted connections and higher preload applications.

Is this nut compatible with standard M12 bolts?
Yes; the nut is specified as M12 under DIN 6331, ensuring compatibility with standard M12 bolts manufactured to the same thread standard.

Which spanner size is required to fit this nut?
A spanner or socket of 18 mm (SW 18 mm) is required to engage the nut correctly and apply the specified torque.

What is the overall height and how does it affect assembly?
The nut has a total height of 18 mm, providing sufficient thread engagement for secure clamping while fitting common assembly envelopes.

How is the geometry controlled to ensure repeatable performance?
The documented corner measure 20.03 mm and machined finish indicate controlled production tolerances, supporting repeatable torque transfer and reduced risk of component deformation during tightening.

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