S-93852A109 0.938" ID x 2.25" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength and durability provided by a Rockwell B68 hardness rating, ensuring long-term performance under heavy loads.
• Reliable load distribution and vibration resistance thanks to the USS flat design, which helps prevent fastener loosening and surface damage.
• Precise dimensional fit with a 0.938" ID and 2.25" OD, ensuring compatibility with 7/8" screws and consistent assembly.
• Compliance with rigorous industry standards including ASME B18.21.1, guaranteeing consistent quality and interchangeability.
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.
• Robust thickness range (0.136" - 0.192") provides flexibility for various gasketing and spacing needs in demanding applications.

Professional Applications & Engineering Value

This 7/8" USS flat washer is engineered to address common industrial challenges such as corrosion-induced failure and joint instability. Manufactured from 18-8 stainless steel, it offers excellent resistance to rust and chemical exposure, making it suitable for marine, chemical processing, and food industry equipment. The flat washer design and substantial outer diameter effectively distribute clamping force, reducing stress on connected surfaces and preventing embedment. Its Rockwell B68 hardness ensures it maintains its shape under high tensile loads, providing reliable performance in structural bolting, heavy machinery, and construction applications where vibration resistance and long-term integrity are critical.

Specification Summary & Compliance

This washer features an Inside Diameter (ID) of 0.938", Outside Diameter (OD) of 2.25", and Thickness ranging from 0.136" to 0.192", designed for use with 7/8" screw sizes in the inch system. It conforms to the ASME B18.21.1 standard for dimensional consistency and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted hazardous substances and safe for industrial use.