S-93852A135 0.562" ID x 1.375" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh chemical and marine environments thanks to 316 stainless steel construction
• Exceptional durability and load distribution for heavy-duty applications with a Rockwell B68 hardness rating
• Precise dimensional fit with a 1/2" ID and 1.375" OD, ensuring compatibility with standard 1/2" fasteners
• Guaranteed mechanical performance and interchangeability through compliance with the ASME B18.21.1 standard
• Enhanced safety and reliability in industrial settings with a thickness range of 0.086" to 0.132" for optimal compression
• Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH regulations
• Long-term cost efficiency by reducing replacement frequency and maintenance in corrosive applications

Professional Applications & Engineering Value

These 316 Stainless Steel USS Flat Washers are engineered to solve critical challenges in demanding industrial environments. The USS (Unified Special Society) designation indicates a heavier, more robust flat washer designed for structural applications where standard washers are insufficient. The 316 stainless steel material provides exceptional resistance to chlorides and acidic conditions, making these washers ideal for chemical processing, marine equipment, offshore platforms, and food processing machinery. Their ASME B18.21.1 compliance ensures dimensional consistency and mechanical reliability, preventing joint failure and reducing maintenance downtime. The combination of Rockwell B68 hardness and precise inch system dimensions delivers superior load-bearing capacity and vibration resistance, protecting bolted connections in heavy machinery and structural frameworks.

Specification Summary & Compliance

This USS flat washer features an Inside Diameter (ID) of 0.562", Outside Diameter (OD) of 1.375", and a Thickness range of 0.086-0.132", designed for a 1/2" screw size. Manufacturing and dimensional specifications strictly conform to the ASME B18.21.1 standard. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for hazardous substances.