S-98687A127 21 mm ID x 34 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Superior Load Distribution: The precise 21mm ID and 34mm OD dimensions ensure even pressure distribution, reducing surface damage and extending the lifespan of your assemblies.
• Enhanced Durability with Steel Construction: Made from robust steel, this washer offers excellent resistance to deformation under high-stress conditions, ideal for demanding industrial environments.
• Guaranteed Fit and Function: Specifically designed for M20 screws, it provides a secure and reliable fit, minimizing loosening and maintenance needs in critical applications.
• Rigorous Standard Compliance: Manufactured to meet DIN 433 specifications, ensuring consistent quality, dimensional accuracy, and reliable performance in professional settings.
• Environmental and Safety Assurance: Compliant with RoHS 3 and REACH regulations, making it a safe choice for use in eco-sensitive and regulated industries without harmful substances.
• Optimized Thickness for Stability: With a thickness range of 2.3–2.7 mm, it offers the right balance of flexibility and strength to absorb vibrations and prevent joint failure.
• Versatile Industrial Application: Suitable for a wide range of uses, from machinery to construction, thanks to its metric sizing and high-performance steel material.

Professional Applications & Engineering Value

This M20 DIN 433 flat washer is engineered to address common industrial challenges such as bolt loosening, surface abrasion, and uneven load distribution. Crafted from high-quality steel, it provides exceptional strength and durability, making it ideal for heavy-duty applications in machinery, automotive, and construction sectors. The precise metric dimensions (21mm ID x 34mm OD) and controlled thickness ensure a perfect fit for M20 screws, reducing the risk of assembly failures and minimizing maintenance downtime. By adhering to DIN 433 standards, this washer guarantees consistent performance, while its RoHS and REACH compliance supports environmental responsibility and workplace safety. Whether used in vibrating equipment or structural frameworks, it delivers reliable engineering value by enhancing joint integrity and operational efficiency.

Specification Summary & Compliance

This flat washer features precise dimensions with an inner diameter of 21 mm, outer diameter of 34 mm, and thickness ranging from 2.3 to 2.7 mm, ensuring accurate fit for M20 screw sizes. It conforms to DIN 433 specifications for dimensional tolerance and manufacturing quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its safety and environmental standards for industrial use.