S-90313A229 0.219" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh or humid environments.
• Heavy-duty load distribution thanks to the large 3" outer diameter, reducing surface pressure and preventing joint loosening.
• Precise fit for No. 10 screws with a 0.219" inner diameter, providing secure fastening and minimizing installation errors.
• Durable mechanical performance from a thickness range of 0.122" to 0.145", offering consistent support under vibration and stress.
• Compliance with strict environmental standards including RoHS 3 and REACH, making it safe for regulated industries and global supply chains.
• Versatile inch system compatibility for seamless integration with existing imperial-sized equipment and components.
• Low maintenance and cost-effective due to stainless steel's inherent durability, reducing replacement frequency and downtime.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and uneven load distribution. Its robust 3" OD and precise 0.219" ID ensure optimal performance with No. 10 screw sizes, commonly used in machinery, structural assemblies, and outdoor equipment. The corrosion-resistant properties make it ideal for applications in chemical processing, marine environments, or food processing plants, where moisture and chemicals are prevalent. By providing a reliable barrier against galvanic corrosion and distributing clamp load evenly, this heavy-duty washer extends the service life of fastened joints, reduces maintenance costs, and supports compliance with industry-specific safety standards.

Specification Summary & Compliance

This flat washer adheres to standard inch system dimensions with an inner diameter of 0.219", outer diameter of 3", and thickness ranging from 0.122" to 0.145". It is designed for use with No. 10 screw sizes and manufactured from 18-8 stainless steel for consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and health safety requirements for industrial and international use.