These high-strength internal shakeproof washers are engineered to deliver secure, long-lasting fastening performance in demanding industrial, construction, and engineering applications. Manufactured to recognised standards including DIN 6797/98 (with compatibility across common washer specifications such as DIN 9021, ISO 7089, and BS4320), they help improve load distribution while resisting loosening under heavy loads, vibration, and dynamic forces.

Designed for reliability in harsh environments, these washers are available in durable material and coating options such as stainless steel, galvanised finishes, bright zinc plating, and advanced protective zinc coating systems for enhanced corrosion resistance. Where applicable, the wedge-lock style action increases resistance to back-off, while load-indicating functionality can provide clear feedback on bolt tension during installation and inspection—making them a smart choice for structural and heavy-duty assemblies where precision fastening matters.

• Secure fastening: Helps prevent loosening from vibration and movement
• Corrosion resistance: Suitable for tough environments and long service life
• Standards-focused: Manufactured to industry-recognised specifications for consistent performance
• Versatile use: Ideal for machinery, structural connections, and general engineering assemblies