S-98688A147 2.2 mm ID x 5 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to the zinc plating, extending service life in humid or industrial environments
• Enhanced load distribution from the precise flat design, preventing surface damage and loosening under vibration
• Reliable hardness and durability with a Rockwell C38 rating, ensuring the washer maintains its shape under pressure
• Guaranteed dimensional accuracy and interchangeability, conforming to the stringent DIN 125 and ISO 7089 standards
• Wide material compatibility for use with M2 screws, providing a secure and flush fit in various assemblies
• Safe for regulated industries with full compliance to RoHS 3 and REACH, ensuring no hazardous substances are used
• Cost-effective inventory management due to metric system standardization, simplifying procurement for global projects

Professional Applications & Engineering Value

This M2 zinc plated steel flat washer is engineered to address common failure points in precision assemblies, such as corrosion-induced seizure and stress concentration. The zinc plating provides a sacrificial layer that actively fights rust, making these flat washers ideal for electronics, automotive controls, and machinery exposed to moisture. Their Rockwell C38 hardness ensures they do not deform under the clamping force of M2 screws, maintaining bolt preload and joint integrity in vibrating environments. By adhering to DIN 125 and ISO 7089 standards, these washers deliver consistent thickness and diameter, eliminating fitment issues and reducing assembly time in high-volume production lines. This combination of corrosion resistance, mechanical strength, and standardization offers long-term reliability for demanding industrial applications.

Specification Summary & Compliance

This flat washer features an Inside Diameter (ID) of 2.2 mm, Outside Diameter (OD) of 5 mm, and a Thickness of 0.3-0.4 mm, manufactured to the precise dimensional tolerances of DIN 125 and ISO 7089 standards. It is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of restricted substances and adherence to environmental safety regulations for industrial components.