S-98970A136 0.812" ID x 2" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term durability in harsh industrial environments
• Optimal load distribution with a 2" outer diameter, reducing surface pressure and preventing damage to assembled materials
• Precise fit for 3/4" screws thanks to the 0.812" inner diameter, minimizing play and enhancing joint stability
• Robust construction with a thickness range of 0.122-0.177", providing reliable performance under heavy-duty mechanical stress
• Industry-standard compliance with ASME B18.21.1 specifications, ensuring consistent quality and interchangeability
• Environmentally responsible manufacturing with RoHS 3 compliance, meeting strict regulatory standards for hazardous substances
• Versatile USS flat washer design suitable for various inch-based assembly systems, streamlining inventory and procurement

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering value by addressing common industrial challenges like corrosion-induced failure and joint loosening. Crafted from hot-dipped galvanized steel, it provides a thick, uniform zinc coating that effectively shields against moisture, chemicals, and outdoor exposure, extending service life in applications such as structural steel assemblies, machinery frames, and infrastructure projects. The precise 0.812" ID ensures a snug fit on 3/4" screws, while the generous 2" OD disperses clamping force over a wider area, preventing surface indentation and maintaining bolt preload. Ideal for heavy-duty washers needs in construction, manufacturing, and transportation sectors, this component enhances reliability in industrial washers applications where vibration resistance and long-term integrity are paramount.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.812", outer diameter of 2", and thickness ranging from 0.122" to 0.177", designed specifically for use with 3/4" screws. It conforms to ASME B18.21.1 standards for dimensional accuracy and performance in inch-series flat washers. The product is manufactured from hot-dipped galvanized steel and is fully RoHS 3 (2015/863/EU) compliant, ensuring adherence to environmental regulations for restricted substances.