S-92538A450 5.3 mm ID x 22 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Precise flush mounting ensured by the 90° countersink angle, providing a smooth, professional finish without protrusions.
• Enhanced load distribution from the 22mm outer diameter, reducing surface pressure and preventing material damage.
• Reliable hardness and durability with Rockwell B83 rating, offering excellent wear resistance and long service life.
• Accurate fit for M5 screws with a 5.3mm inner diameter, ensuring secure fastening and minimizing loosening risks.
• Compliance with global standards including RoHS 3 and REACH, making it safe for regulated industries and international supply chains.
• Consistent thickness control between 3.2-3.8mm, providing uniform performance and ease of installation in metric assemblies.

Professional Applications & Engineering Value

This M5 metric countersunk washer is engineered from 18-8 Stainless Steel to address common challenges in industrial fastening, such as corrosion and mechanical stress. The 90° countersink angle allows for seamless integration in applications requiring flush surfaces, like machinery panels, automotive components, and architectural fixtures. Its corrosion-resistant properties make it suitable for environments exposed to moisture, chemicals, or temperature variations, reducing maintenance needs. Combined with a Rockwell B83 hardness, it withstands vibration and load, ensuring reliable performance in industrial washers for heavy-duty use. This design supports efficient assembly and enhances the longevity of metric hardware systems.

Specification Summary & Compliance

This washer features precise dimensions with an ID of 5.3 mm, OD of 22 mm, and thickness ranging from 3.2-3.8 mm, adhering to metric standards for accurate fit with M5 screws. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial applications. The manufacturing follows strict quality controls for consistent performance and safety.