M20 Hexagon Nut With Flange Forged Class 10 Strength Key Size 30mm, DIN 6331 - AMF

Take advantage of a forged, heat-treated flange nut in strength class 10 for secure bolted joints and consistent assembly performance; order the AMF hexagon nut directly via Metav Werkzeuge or consult our advisors for technical clarification.

AMF Hexagon Nut DIN 6331 M20 – forged, strength class 10, flanged

The AMF Hexagon Nut DIN 6331 M20 is a flanged, heat-treated fastening component designed for demanding industrial and workshop bolting tasks.

• Forged construction for enhanced durability
• Strength class 10 for high-load applications
• Integrated flange distributes clamping force
• Spanner size 30 mm for standard tools

Reliable performance for heavy-duty bolting

A forged hexagon nut produced to DIN 6331 provides high-strength retention where joint integrity is crucial. The combination of forging and heat-treated processing increases toughness and resistance to fatigue compared with machined or cast alternatives. For assemblies subject to vibration or cyclic loads, the strength class 10 rating indicates suitability for heavy-duty applications and reduces the risk of thread failure, leading to fewer maintenance interventions and longer service intervals.

Improved load distribution and easier assembly

The built-in flange spreads the clamping force over a larger contact area, lowering the pressure on the mating surface and helping to prevent loosening in critical joints. With a standard M20 thread form and a 30 mm spanner width, the component integrates seamlessly into existing tooling regimes and workshop procedures. This simplicity in handling translates into faster assembly cycles and consistent torque application during production or repair work.

Material and conformity that support quality control

Manufactured by AMF to meet the referenced standard, the nut’s manufacturing method ensures dimensional accuracy and repeatable mechanical properties important for quality-assured production. The combination of flange, forging, and tempering supports reliable preload retention and corrosion resistance when used with the correct pairing of bolts and washers. Documentation to support inspection and traceability can be requested to fit internal quality processes and maintenance records.

Secure your supply through Metav Werkzeuge for dependable delivery from Emmerich and contact our technical advisors at info@metav-werkzeuge.com or +49 2822 7131930 for specification checks or compatibility guidance

Technical data

• Article number: 4000603347NW
• Standard: DIN 6331
• Product: Hexagon nut, M20
• Brand: AMF

Facts

• Thread size: M20
• Spanner size: 30 mm
• Strength class: 10
• Packaging unit: 1

Special features

• Flange
• Forged
• Heat-treated
• DIN 6331 compliant
• Spanner width 30 mm

FAQ

What applications is this nut suited for?
The AMF hexagon nut M20 is intended for heavy-duty bolted joints where a flanged, high-strength fastening element is required.

How does the flange improve joint performance?
The flange on the AMF nut distributes clamping force across a wider area, reducing local pressure and helping to maintain preload under dynamic loading.

Is the nut compatible with standard M20 bolts and washers?
Yes, the M20 thread is compatible with standard M20 bolts and appropriate washers when matched for strength class and thread fit.

What does strength class 10 mean for durability?
Strength class 10 denotes a high-strength grade suitable for demanding applications; the AMF nut’s rating supports sustained loads and helps minimise maintenance cycles.

How does forging affect the component compared with machined nuts?
Forging refines the grain structure and enhances mechanical toughness, so the forged AMF nut typically offers better fatigue resistance than a comparable machined part.

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