S-93852A127 2.125" ID x 4.5" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction
• Exceptional load distribution and joint stability with a large 4.5" outer diameter
• Precise fit for 2" screws ensured by the 2.125" inner diameter, minimizing play and vibration
• Robust mechanical performance from a substantial thickness range of 0.153-0.213"
• Guaranteed dimensional consistency and interchangeability through ASME B18.21.1 compliance
• Safe for sensitive applications with full compliance to RoHS 3 and REACH regulations
• Long-term durability and reduced maintenance needs in industrial settings

Professional Applications & Engineering Value

This USS flat washer is engineered to solve critical challenges in heavy-duty industrial applications. The 316 stainless steel material provides excellent resistance to corrosion from chemicals, saltwater, and extreme weather, making it ideal for marine, chemical processing, and outdoor infrastructure projects. Its large 4.5" OD and substantial thickness effectively distribute high clamping forces, preventing surface damage, bolt loosening, and joint failure under dynamic loads. Designed for use with 2" screws, this washer ensures a secure fit in structural assemblies, machinery, and piping systems, delivering reliable performance where vibration resistance and long-term integrity are paramount. By adhering to ASME B18.21.1 standards, it guarantees precise dimensions and consistent quality for seamless integration into your industrial fastening solutions.

Specification Summary & Compliance

This USS flat washer features an ID of 2.125", OD of 4.5", and thickness of 0.153-0.213", designed for 2" screw size applications. It is manufactured in accordance with the ASME B18.21.1 standard, ensuring precise dimensional tolerances and mechanical properties for the inch system. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.