Metric Spring Washers Square Section Din 7980 BZP

Reliable Locking for General Assembly

When cost-effectiveness and performance must go hand-in-hand, the Mild Steel BZP DIN 7980 Spring Washer is the industry standard choice. Fasteners in machinery, furniture, and general construction are constantly subjected to small vibrations that can lead to significant loosening over time. This washer is engineered to counteract those forces. By utilizing high-quality spring steel, it provides a tough, resilient locking mechanism that secures your assemblies without the higher price tag of stainless steel, making it perfect for high-volume indoor applications.

The Advantage of the Square Profile

Standard flat washers distribute load, but they do little to lock a fastener in place. The DIN 7980 is different; it features a specific square cross-section wire coiled into a split ring. When tightened, this square profile exerts a strong axial force against both the bolt head and the workpiece. This continuous spring pressure absorbs shock and compensates for the natural "bedding in" of materials. Additionally, the sharp split ends of the square wire dig into the mating surfaces, creating mechanical friction that physically resists the rotation required for a nut to back off.

Bright Zinc Plating for Protection

While raw steel is strong, it is vulnerable to rust. These washers are treated with a Bright Zinc Plating (BZP), a passivation process that gives the hardware a shiny, clean aesthetic and a layer of protection. This zinc layer acts as a sacrificial anode—meaning if the washer is scratched, the zinc will corrode before the steel beneath it does. This makes these washers ideal for indoor environments, dry warehousing, automotive interiors, and general joinery where they will not be exposed to harsh weather or constant moisture.