AN 133 zinc plated black Nord Lock washer

The Nord Lock washer is a washer consisting of two identical washers that have radial notches on one side that create a forceful effect on the clamping surfaces and wedges on the other side that reinforce the pre-tightening during vibration.

Application: DIN 133 is used in construction and heavy engineering to prevent fasteners from loosening under high dynamic loads and vibration. Among all types of self-locking or locking fasteners, these washers provide the most effective results. Due to this, these washers are widely used in the construction of railway transport, port cranes, wind turbines, etc.

Material of manufacture: steel.

Coating: black zinc cloth.

• The main characteristics of this coating:
• Organic black top coat;
• Excellent corrosion protection;
• High hiding power on silver and black base coatings;
• Attractive uniform black appearance;
• Very good chemical resistance; increased resistance to UV radiation;
• Excellent adhesion, i.e. the coating does not peel, crack or flake off even under mechanical stress or chemical influences;
• Built-in lubricant component for controlled friction characteristics;
• No hydrogen embrittlement;
• Excellent corrosion resistance in NSST and cyclic corrosion tests.