Flat Washer, ISO 7089, BUMAX 88

BUMAX 88 offers better corrosion resistance than standard A4 due to higher Molybdenum content. BUMAX 88 is a very consistent material that offers higher yield strength and lower amount of inclusion than standard A4 fasteners, that gives superior mechanical properties and fatigue resistance. BUMAX 88 fasteners are used in many applications that demands very low magnetic permeability, it has lower magnetic permeability and less variation from batch to batch compared to standard A4 fasteners.

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