S-93849A212 22 mm ID x 72 mm OD DIN 440-R Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Superior load distribution due to the large 72mm outer diameter, minimizing surface pressure and preventing material damage.
• Precise fit for M20 screws with a 22mm inner diameter, ensuring secure fastening and reducing the risk of loosening under vibration.
• Heavy-duty durability from a substantial 5.0-7.0mm thickness, providing long-lasting performance in high-stress assemblies.
• Guaranteed dimensional accuracy and interchangeability by conforming to the rigorous DIN 440-R standard.
• Safe for sensitive applications with full compliance to RoHS 3 and REACH environmental regulations, containing no hazardous substances.
• Broad industrial compatibility as a metric flat washer, seamlessly integrating into global machinery and equipment designs.

Professional Applications & Engineering Value

This heavy-duty flat washer is engineered to solve critical challenges in industrial fastening. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in chemical processing, marine equipment, and food machinery where moisture and aggressive agents are present. Its DIN 440-R design ensures a large bearing surface, which effectively distributes clamp load over a wider area. This prevents embedding into soft materials and reduces the risk of joint failure under dynamic loads or vibration, common in construction, heavy machinery, and transportation sectors. The precise metric dimensions (22mm ID, 72mm OD) guarantee a perfect fit for M20 screws, enhancing assembly reliability and maintenance efficiency.

Specification Summary & Compliance

This flat washer features an Inner Diameter of 22 mm, Outer Diameter of 72 mm, and Thickness of 5.0-7.0 mm, designed for use with M20 screw sizes. It is manufactured in accordance with the DIN 440-R standard, ensuring dimensional precision and performance consistency. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from restricted hazardous substances and safe for use in regulated markets.