Available in a variety of metric sizes, these single coil, square section spring washers are ideal for holding fasteners in place even when under vibratory forces, to prevent unscrewing. Manufactured from spring steel, each product is electroplated with a BZP to ensure maximum durability. Features and Benefits BZP (Bright Zinc Plating) finish protects the spring washers from corrosion as well as general wear and tear Available in a variety of thread sizes from M3 up to M30 to suit your requirements Manufactured from spring steel for resilience Will prevent nuts from moving even when under vibratory forces Typical Applications Automotive Engineering Construction Standards DIN 7980 BS 4464A