S-98472A300 5.3 mm ID x 16 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Flush surface finishing with a 90° countersink angle for seamless integration in applications requiring smooth, aerodynamic, or aesthetic surfaces.
• Superior corrosion resistance due to 18-8 stainless steel construction, ensuring long-term reliability in humid or chemically aggressive environments.
• Precise dimensional fit with 5.3mm inner diameter, designed specifically for M5 screws to prevent misalignment and ensure secure fastening.
• Enhanced load distribution from the 16mm outer diameter, reducing surface pressure and minimizing material stress or damage.
• Durable mechanical performance with a 2.8mm overall height, providing stability without adding excessive bulk to assemblies.
• Compliance with stringent regulations, including RoHS 3 and REACH, making it suitable for global industrial and commercial markets.
• Metric system compatibility for easy integration into international engineering designs and replacement parts inventories.

Professional Applications & Engineering Value

This M5 metric countersunk washer is engineered to address common industrial challenges such as surface damage, corrosion-induced failure, and assembly misalignment. Crafted from 18-8 stainless steel, it offers excellent resistance to rust and oxidation, making it ideal for outdoor equipment, marine hardware, and food processing machinery where hygiene and durability are critical. The 90° countersunk angle ensures a flush mount, eliminating protrusions that could interfere with moving parts or compromise safety in high-traffic areas. Its precise metric dimensions (5.3x16x2.8mm) guarantee consistent performance in automated assembly lines, reducing downtime and maintenance costs. By combining robust material properties with a corrosion-resistant finish, this washer extends the lifespan of fastening systems in demanding environments like automotive, aerospace, and construction.

Specification Summary & Compliance

This washer adheres to standard metric sizing with an inner diameter of 5.3mm, outer diameter of 16mm, and overall height of 2.8mm, designed for use with M5 screws. It features a 90° countersink angle for flush mounting applications and is manufactured from 18-8 stainless steel for reliable performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for industrial use worldwide.