S-98691A114 4.3 mm ID x 8 mm OD DIN 433; ISO 7092 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass material, ensuring longevity in harsh industrial environments
• Excellent electrical conductivity for reliable performance in electrical and grounding applications
• Precision dimensional accuracy with 4.3mm ID and 8mm OD for perfect fit with M4 screws
• Enhanced durability with Rockwell B76 hardness rating for sustained performance under load
• International standard compliance meeting DIN 433 and ISO 7092 specifications for global interoperability
• Environmental responsibility with RoHS 3 compliance, safe for regulated applications
• Optimal vibration resistance and sealing capabilities for mechanical stability in assembled components

Professional Applications & Engineering Value

This M4 brass flat washer delivers exceptional engineering value through its copper alloy composition and precision manufacturing. The brass material provides inherent corrosion resistance, making it ideal for marine, chemical processing, and outdoor applications where moisture exposure is common. Its excellent electrical conductivity makes it particularly valuable in electrical enclosures, control panels, and grounding systems where reliable current transfer is critical. The flat washer design according to DIN 433 and ISO 7092 standards ensures proper load distribution and prevents fastener loosening in vibrating machinery, automotive assemblies, and precision equipment. The thin 0.4-0.6 mm thickness allows for space-efficient installations while maintaining structural integrity, solving common challenges of galvanic corrosion and electrical isolation in multi-material assemblies.

Specification Summary & Compliance

This precision metric flat washer features exact dimensions of 4.3mm inner diameter and 8mm outer diameter with thickness ranging 0.4-0.6mm, engineered for M4 screw applications. Manufactured to DIN 433 and ISO 7092 dimensional and tolerance standards, ensuring consistent quality and interchangeability. The washer maintains Rockwell B76 hardness for mechanical reliability and is RoHS 3 (2015/863/EU) compliant with exemption 6(c) for lead in copper alloys, meeting international environmental regulations while maintaining optimal material performance characteristics.