13mm Flat Washer DIN 6340 For M12 Screws, 35mm Outer Diameter x 5mm Thick - AMF

Take advantage of a standardised fastening solution that ensures consistent load distribution and straightforward inventory management: the washer is manufactured to DIN 6340, sized for M12 fastenings with a 13 mm bore and a 5 mm thickness, delivering reliable performance in assembly processes. Order the part directly via Metav Werkzeuge or consult our specialists for compatibility checks.

U-washer DIN 6340 for M12 screws, 13 mm bore — AMF

The U-washer DIN 6340 is a standard-compliant washer designed to distribute clamping loads for M12 fastenings in industrial and workshop assemblies.

• Standardised to DIN 6340
• Suitable for M12 fastenings
• 13 mm bore for precise fit
• 5 mm thickness for stable support

Consistent assembly results through standard compliance

Conformity with DIN 6340 ensures consistent geometry and repeatable behaviour in series assembly, which reduces variability during torqueing and joint pre-loading. The standardised inner diameter of 13 mm corresponds to the nominal thread size, so the bore clears M12 threads without play that would compromise clamping. Where process reliability is required, such as in fixture building or machine assembly, the standard designation provides a clear basis for procurement and quality control. The item is listed under SKU 4000833438NW for traceability in stock systems.

Mechanical benefits from defined dimensions

A washer with an outer diameter of 35 mm and a thickness of 5 mm gives a predictable contact area and stiffness under load; this translates into reduced localised material deformation and improved joint life compared with undersized washers. The specified thickness helps prevent subsidence under high compression and keeps the clamped parts aligned. In practical terms, using a washer of the stated dimensions supports consistent clamp force transmission and lowers the risk of fastener loosening in dynamic or thermal cycling environments.

Practical handling and workshop integration

The component is intended for straightforward stocking and use in maintenance and production settings. Supplied in single units, the part can be logged into inventory systems and matched to M12 bolt assortments or fitting kits. As a basic fastening element, it integrates with established assembly routines and can be combined with standard nuts and bolts without additional adjustments. For technicians less familiar with specification sheets: the bore is the central hole size, the outer diameter indicates the load-bearing ring, and the thickness relates to the washer’s stiffness — these three parameters together determine fit and performance.

Contact Metav Werkzeuge for supply and technical advice on AMF U-washers; call +49 2822 7131930 or email info@metav-werkzeuge.com for delivery from Emmerich and assistance with application suitability

Technical data

• Article number: 4000833438NW
• Label: U-Scheibe DIN 6340 f.Schrauben M12 Bohrungs-D.13mm AMF
• Manufacturer: AMF
• Product type: Washer
• Suitable for: M12
• Packaging unit: 1

Numeric data

• Bore diameter D1: 13 mm
• Outer diameter D2: 35 mm
• Thickness S: 5 mm
• Standard: DIN 6340

Special features

• Standard-compliant geometry
• Designed for load distribution in M12 joints
• Single-unit packaging for inventory control

FAQ

Is this washer suitable for M12 bolts?
Yes. The washer is specified for M12 fastenings and features a 13 mm bore matched to that thread size.

What does DIN 6340 mean for performance?
DIN 6340 denotes standardised washer geometry; compliance ensures consistent dimensions and predictable behaviour under clamping loads for the AMF washer.

How do the dimensions affect joint stability?
The combination of 35 mm outer diameter and 5 mm thickness increases contact area and stiffness, which helps maintain clamp force and reduce material indentation.

Can the washer be used in structural assemblies with dynamic loads?
Yes. The defined thickness and diameter provide improved resistance to deformation under cyclic loading compared with thinner, smaller washers.

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