S-98689A121 21 mm ID x 34 mm OD DIN 433; ISO 7092 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extending service life.
• Precise dimensional fit with 21mm ID and 34mm OD, ensuring secure seating and uniform load distribution for M20 screws.
• Enhanced mechanical durability from Rockwell B76 hardness, providing reliable performance under repeated stress.
• Guaranteed interchangeability through compliance with DIN 433 and ISO 7092 standards, facilitating global procurement and assembly.
• Environmental and safety compliance with RoHS 3 and REACH regulations, making them suitable for regulated industries.
• Consistent thickness (2.7-3.3 mm) for uniform pressure application, reducing the risk of joint loosening or material damage.
• Cost-effective maintenance due to long-lasting material properties, minimizing replacement frequency and downtime.

Professional Applications & Engineering Value

This M20 flat washer is engineered to address common industrial challenges such as vibration-induced loosening and corrosive degradation. Manufactured from 18-8 stainless steel, it offers excellent resistance to rust and chemical exposure, making it ideal for applications in marine equipment, chemical processing, and outdoor machinery. The metric dimensions and adherence to DIN 433 and ISO 7092 standards ensure precise compatibility with M20 fasteners, providing a reliable seal and load distribution. This reduces wear on connected components and enhances the structural integrity of assemblies, supporting efficient and safe operations in demanding environments.

Specification Summary & Compliance

This washer features an inner diameter of 21mm, outer diameter of 34mm, and thickness ranging from 2.7 to 3.3mm, designed for M20 screw sizes. It conforms to DIN 433 and ISO 7092 standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial sectors without hazardous substances.