S-98688A151 4.3 mm ID x 8 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
- Superior corrosion resistance through zinc plating, extending service life in humid or demanding industrial environments
- Precise M4 screw compatibility with 4.3mm ID ensuring secure fit and optimal load distribution
- Enhanced durability with Rockwell C38 hardness rating for reliable performance under mechanical stress
- Standardized dimensions (8mm OD, 0.5-0.6mm thickness) per DIN 433 for consistent quality and interchangeability
- Regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries
- Reduced assembly time through metric system standardization, streamlining production processes
- Reliable surface protection that maintains integrity during installation and throughout product lifecycle
Professional Applications & Engineering Value
This M4 metric flat washer delivers critical engineering value through its zinc plated steel construction and DIN 433 compliance. The combination of precise dimensional control (4.3mm ID × 8mm OD) and Rockwell C38 hardness ensures consistent performance in industrial assembly applications where vibration resistance and load distribution are paramount. The zinc plating provides essential corrosion protection for machinery, automotive components, and electrical enclosures exposed to environmental challenges. As a metric flat washer meeting German industrial standards, it offers reliable sealing and spacing functions while preventing fastener loosening in high-stress applications, making it ideal for OEM manufacturing and maintenance operations requiring standardized, compliant components.
Specification Summary & Compliance
Manufactured to DIN 433 specifications with precise dimensional tolerances: 4.3mm inner diameter, 8mm outer diameter, and 0.5-0.6mm thickness. Constructed from zinc plated steel with Rockwell C38 hardness for mechanical reliability. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
