S-97310A137 21 mm ID x 44 mm OD DIN 7349 Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with passivated 18-8 stainless steel, ensuring long-term reliability in harsh industrial environments
- Precise dimensional fit with 21mm ID and 44mm OD, providing optimal load distribution for M20 screw applications
- Enhanced durability from a robust 7.0-9.0mm thickness, offering excellent surface protection and vibration resistance
- Guaranteed compliance with DIN 7349 standards, ensuring consistent quality and interchangeability in metric assemblies
- Environmental safety assurance through RoHS 3 and REACH compliance, meeting strict regulatory requirements for industrial use
- Wide industrial applicability due to metric sizing and stainless steel construction, suitable for diverse machinery and equipment
Professional Applications & Engineering Value
This M20 flat washer is engineered to address common industrial challenges such as corrosion-induced failure and uneven load distribution. Constructed from passivated 18-8 stainless steel, it provides exceptional resistance to moisture, chemicals, and oxidation, extending service life in demanding applications like heavy machinery, construction equipment, and marine environments. The metric dimensions (21mm ID x 44mm OD) and compliance with DIN 7349 ensure precise fit and reliable performance under high stress, reducing maintenance needs and downtime. Its 7.0-9.0mm thickness enhances surface coverage, preventing bolt loosening and damage to connected components, making it ideal for industrial washers in automotive, manufacturing, and infrastructure projects.
Specification Summary & Compliance
This flat washer adheres to DIN 7349 standards for dimensional accuracy and performance, with an inner diameter of 21mm, outer diameter of 44mm, and thickness range of 7.0-9.0mm. It is manufactured from passivated 18-8 stainless steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for global industrial applications.
