S-93852A125 1.875" ID x 4" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments
• Optimal load distribution across a large 4" outer diameter surface, reducing stress on connected components
• Precise compatibility with 1 3/4" screws thanks to the 1.875" inner diameter, ensuring secure fastening
• Enhanced durability with a thickness range of 0.153-0.213", providing reliable performance under heavy loads
• Guaranteed quality and interchangeability through compliance with ASME B18.21.1 standards
• Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH regulations
• Versatile industrial application in inch measurement systems, suitable for various heavy-duty assemblies

Professional Applications & Engineering Value

This 316 stainless steel USS flat washer is engineered to address critical challenges in demanding environments where corrosion and high mechanical stress are prevalent. Its large 4" OD and 1.875" ID provide an extensive bearing surface, effectively distributing clamp load and preventing joint loosening or surface damage in structural applications. The high-grade 316 stainless steel material offers exceptional resistance to chlorides and acidic conditions, making it indispensable in chemical processing, marine equipment, and offshore installations. By utilizing this ASME B18.21.1 compliant washer, engineers ensure dimensional consistency and reliable performance in heavy-duty industrial assemblies, reducing maintenance frequency and enhancing the longevity of bolted connections under sustained vibration and load.

Specification Summary & Compliance

This USS flat washer features an outer diameter of 4", inner diameter of 1.875", and thickness ranging from 0.153" to 0.213", designed for use with 1 3/4" screws. Manufactured in accordance with ASME B18.21.1 standards, it ensures precise dimensional tolerances and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its adherence to restricted substance guidelines and sustainable manufacturing practices.