12mm Hex Nut DIN 6331 M8 Threaded, Strength Class 10, SW13 - AMF

Take advantage of the combination of standard compliance, high tensile capacity and precision machining to secure reliable assemblies with minimal maintenance; order directly via Metav Werkzeuge or consult our specialists for specification support.

Hexagon nut DIN 6331 M8 — AMF, strength class 10, 13 mm spanner

A hexagon nut DIN 6331 M8 designed for high-strength fastening in industrial and mechanical assemblies, offering standard compatibility and a machined bearing surface for consistent torque transfer.

• DIN 6331 standard compliance
• M8 thread, strength class 10
• 13 mm spanner width, 14.4 mm across corners
• 12 mm overall height, pressed and milled finish

Reliable clamping through recognised strength class

A fastener specified to strength class 10 delivers higher tensile and shear capacity than common lower classes, which directly improves joint safety under dynamic loads. The M8 thread paired with the DIN 6331 specification ensures compatibility with standardised bolts and studs, simplifying procurement and reducing inventory complexity. For maintenance planners, this means fewer part variants to manage and more predictable performance in bolted joints.

Precision faces for predictable torque and reduced loosening

The combination of pressed and milled production steps provides flat bearing faces and tight geometry control, which improves contact between nut and mating surface. With a 13 mm spanner width and 14.4 mm across corners, the hexagon profile supports standard tooling and avoids slippage during assembly. The 12 mm overall height balances thread engagement with compact installation space, helping to maintain preload and reduce the risk of loosening in vibrating environments.

Standard compatibility and practical application benefits

Conformity to DIN 6331 makes this component suitable for machine building, jigs and fixtures, conveyor lines and general workshop assemblies where standard parts are required for interchangeability. The nut’s defined geometry and strength rating enable engineers to perform straightforward strength checks during design reviews and maintenance inspections, supporting predictable life-cycle planning and fewer unexpected failures.

Specify AMF strength class 10 hexagon nuts via Metav Werkzeuge for robust, standardised fastening — contact our consultants for tailored technical advice and order coordination.

Technical Data

• Article number: 4000833406NW
• Brand: AMF
• Product type: Hexagon nut
• Standard: DIN 6331
• Label: Hexagon nut DIN 6331 M8 spanner 13 mm pressed and milled strength 10 AMF

Facts

• Thread size: M8
• Spanner width: 13 mm
• Across corners: 14.4 mm
• Overall height: 12 mm
• Packaging unit: 1

Special features

• Strength class 10
• Pressed and milled faces
• Suits standard M8 bolts

FAQ

What does strength class 10 mean for load capacity?
Strength class 10 indicates a high tensile rating for the nut; the AMF hexagon nut in this class is suitable where increased clamping force and resistance to shear are required.

Is this nut compatible with standard M8 bolts and screws?
Yes, the hexagon nut DIN 6331 M8 is designed to mate with standard M8 bolts and studs, ensuring interchangeability across industrial components.

Which spanner size is recommended for assembly?
A 13 mm spanner is specified for this hexagon nut; the across-corners dimension of 14.4 mm accommodates standard tooling without risk of slipping.

Does the pressed and milled finish affect torque application?
The pressed and milled faces provide flat, accurate contact surfaces that improve torque distribution and reduce the likelihood of loosening under vibration.

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