S-98687A303 5.3 mm ID x 9 mm OD DIN 433 General Purpose Washers
General Purpose 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
- Enhanced corrosion resistance through black oxide steel construction, extending service life in demanding industrial environments
- Precise dimensional compatibility with M5 screws (5.3mm ID) ensures secure fastening and optimal load distribution
- Standardized DIN 433 compliance guarantees interchangeability and reliable performance in metric assembly systems
- Consistent 9mm outer diameter provides uniform bearing surface to prevent fastener embedment and surface damage
- Environmental regulation compliance with RoHS 3 and REACH standards for safe use across global markets
- Optimized 0.9-1.1mm thickness range delivers ideal balance between spacing functionality and structural integrity
- Metric system alignment ensures seamless integration with international engineering specifications and replacement parts
Professional Applications & Engineering Value
These M5 flat washers manufactured from black oxide steel address critical challenges in industrial assembly where corrosion protection and dimensional precision are paramount. The DIN 433 standard compliance ensures consistent performance in automated production environments, while the metric sizing (5.3mm ID, 9mm OD) provides exact compatibility with M5 fasteners commonly used in machinery, electrical enclosures, and automotive components. The black oxide surface treatment creates a protective barrier against oxidation without significantly altering dimensional tolerances, making these flat washers ideal for applications requiring both corrosion resistance and precise fitment in harsh operating conditions.
Specification Summary & Compliance
Manufactured to DIN 433 specifications with precise metric dimensions: 5.3mm inner diameter, 9mm outer diameter, and 0.9-1.1mm thickness range. These black oxide steel washers maintain dimensional accuracy for M5 screw applications while complying with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial use across international markets.
