Nut DIN 985 M4 8 zinc-nickel black
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A self-locking nut is a nut used in fasteners that are constantly subjected to dynamic loads, particularly vibration, which can cause them to loosen. In DIN 985 nuts, the locking mechanism is provided by a nylon ring that is threaded as the nut is tightened.
Applications: DIN 985 is used in mechanical engineering, construction, warehouse equipment, lifting equipment, agricultural machinery, tools, etc.
Material: High-strength alloy structural steel. The high strength class 8 allows these nuts to be used in high-load fasteners.
Coating: Black zinc-nickel. The zinc-nickel coating is an innovative anti-corrosion solution for fasteners, combining high protective performance, mechanical strength, and environmental safety.
The key advantages of the zinc-nickel coating are:
- Excellent corrosion resistance—more than three times higher than that of conventional zinc;
- Low risk of hydrogen embrittlement;
- Compatibility with aluminum—does not form galvanic couples and does not cause corrosion when combined with aluminum parts;
- Enhanced heat resistance—retains its protective properties under temperature fluctuations and during prolonged operation in high-temperature conditions;
- Mechanical strength—harder than pure zinc, with better resistance to scratches and wear;
- Environmental friendliness—less formation of oxidation products, resulting in lower zinc emissions into the environment throughout the product’s entire life cycle.
- Aesthetics and discreet appearance—the coating has a deep
Common name: Locknut.
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