S-90313A308 2" ID x 4" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel material, ensuring long-term reliability in harsh industrial environments.
• Optimal load distribution with a large 4" outer diameter, reducing surface pressure and preventing material damage.
• Precise fit for 1 7/8" screws with a 2" inner diameter, minimizing installation errors and improving assembly efficiency.
• Enhanced durability through a substantial 0.302-0.335" thickness, providing consistent performance under heavy-duty loads.
• Compliance with strict environmental standards, including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Wide compatibility with inch-system fasteners, facilitating easy integration into existing North American industrial setups.
• Reliable flat washer design for even stress dispersion, extending the lifespan of connected components.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as corrosion-induced failures and uneven load distribution. Its robust 4" OD x 2" ID dimensions and 0.302-0.335" thickness provide a stable interface for 1 7/8" screw size applications, effectively preventing loosening under vibration and heavy loads. Made from corrosion-resistant 18-8 stainless steel, it excels in environments exposed to moisture, chemicals, or outdoor elements—making it ideal for construction, machinery assembly, and marine equipment. The flat washer design ensures uniform pressure across surfaces, reducing wear and maintenance costs while supporting long-term structural integrity in demanding industrial washers applications.

Specification Summary & Compliance

This washer adheres to inch-system measurement standards with precise dimensions: Inner Diameter of 2", Outer Diameter of 4", and Thickness ranging from 0.302" to 0.335". It is manufactured from 18-8 Stainless Steel for consistent quality and performance. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use. This specification guarantees reliable fit and function in assemblies requiring a flat washer for 1 7/8" screw size.