Phosphor Bronze Square Section Spring Washers DIN 7980

Specialized Protection for Marine & Electrical Use

When your project involves saltwater, chemicals, or electrical currents, standard steel washers simply won't cut it. Our Phosphor Bronze DIN 7980 Spring Washers are engineered for these specific, demanding environments. Phosphor bronze is a copper alloy renowned for its resilience, offering low friction, high fatigue strength, and—most importantly—superb resistance to corrosion. This makes these washers the standard choice for naval architecture, boat building, and offshore rigging where constant exposure to moisture is a given.

Prevent Loosening with Spring Tension

Beyond their material benefits, these washers are powerful mechanical locks. Designed with a square cross-section, they feature a split "single coil" geometry. As you tighten your bolt or nut, the washer is compressed flat, exerting a continuous reactive force against the fastener head. This "spring effect" absorbs shock and vibration, ensuring the assembly remains tight even under dynamic loads. The square edges also provide a slight bite into the bearing surface, further preventing the rotation that leads to loosening.

The Importance of Material Matching

One of the most critical aspects of fastener assembly is avoiding galvanic corrosion—a process where dissimilar metals react and corrode when in contact. If you are using Brass or Bronze bolts, using a Stainless Steel or Zinc Plated washer can lead to premature failure. These Phosphor Bronze washers are the perfect mate for copper-based alloy fasteners, ensuring chemical stability and the longevity of your joint. Additionally, their non-magnetic nature makes them indispensable for electrical switchgear and sensitive instrumentation where magnetic interference must be avoided.