S-98687A401 6.4 mm ID x 11 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanized steel construction, ensuring long-term durability in harsh industrial environments.
• Precise dimensional fit with 6.4mm inner diameter and 11mm outer diameter, providing reliable alignment and load distribution for M6 screws.
• Enhanced mechanical strength from Rockwell B76 hardness, reducing deformation under pressure and extending service life.
• Compliance with DIN 433 standards guarantees consistent quality and interchangeability in European machinery and equipment.
• Optimized thickness range of 1.4-1.8mm offers flexibility for various assembly tolerances while maintaining structural integrity.
• Environmental and safety assurance through RoHS 3 and REACH compliance, meeting strict regulatory requirements for industrial use.
• Cost-effective performance by minimizing maintenance needs and replacement frequency in demanding applications.

Professional Applications & Engineering Value

This M6 metric flat washer is engineered to address common industrial challenges such as fastener loosening, surface damage, and corrosion-induced failure. Constructed from galvanized steel, it provides a robust barrier against moisture and chemicals, making it ideal for outdoor machinery, automotive assemblies, and electrical enclosures. The adherence to DIN 433 ensures precise thread compatibility and uniform pressure distribution, preventing stress concentration on connected components. With its Rockwell B76 hardness and controlled thickness, this washer maintains clamp load under vibration and thermal cycling, reducing the need for frequent retightening in industrial applications. By integrating corrosion-resistant properties with standardized dimensions, it enhances assembly reliability and minimizes downtime in production lines.

Specification Summary & Compliance

This flat washer features a 6.4mm inner diameter and 11mm outer diameter with a thickness range of 1.4-1.8mm, designed for M6 screw sizes and manufactured to DIN 433 specifications for dimensional accuracy. It meets Rockwell B76 hardness standards to ensure mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial sectors without hazardous substances.