S-98687A137 8.4 mm ID x 15 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution: The 15mm outer diameter provides a wider bearing surface, reducing stress and preventing surface damage in M8 screw assemblies.
• Superior Durability: Made from high-strength steel with a Rockwell B76 hardness, this washer resists deformation under pressure for long-lasting performance.
• Precision Fit & Alignment: The 8.4mm inner diameter ensures a snug fit on M8 screws, minimizing play and improving assembly accuracy.
• Reliable Compliance: Manufactured to DIN 433 standards, guaranteeing consistent quality and interchangeability in industrial applications.
• Environmental Responsibility: Compliant with RoHS 3 and REACH regulations, ensuring safe use and adherence to global environmental standards.
• Versatile Thickness Range: With a thickness of 1.4-1.8mm, it offers flexibility to accommodate slight variations in assembly tolerances.
• Corrosion Resistance: Steel construction provides inherent strength and resistance to wear in demanding environments.

Professional Applications & Engineering Value

This M8 metric flat washer is engineered to address common industrial challenges such as joint loosening, surface abrasion, and uneven load distribution. Crafted from robust steel and compliant with DIN 433, it ensures precise dimensional accuracy and reliable performance in heavy-duty machinery, automotive assemblies, and construction frameworks. The Rockwell B76 hardness prevents flattening under high torque, maintaining bolt preload and reducing maintenance frequency. Its 8.4mm ID and 15mm OD provide optimal spacing and stability, making it ideal for applications requiring vibration resistance and extended service life. By integrating this washer, engineers achieve enhanced safety, reduced downtime, and compliance with stringent industry regulations.

Specification Summary & Compliance

This flat washer features an inner diameter of 8.4mm, outer diameter of 15mm, and thickness ranging from 1.4-1.8mm, designed for M8 screw sizes with precise metric tolerances. It conforms to DIN 433 specifications for dimensional consistency and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it meets environmental and safety standards for industrial use.