S-98970A318 2.375" ID x 4.75" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel construction, ensuring long-lasting performance in harsh industrial environments.
• Optimal load distribution due to the large 4.75" OD and 2.375" ID, reducing stress on fastened components and preventing surface damage.
• Enhanced durability and strength from the 0.193-0.248" thickness, providing reliable support for heavy-duty applications with 2 1/4" screw sizes.
• Guaranteed dimensional accuracy by complying with ASME B18.21.1 standards, ensuring consistent fit and performance in USS flat washer assemblies.
• Environmental and safety compliance with RoHS 3 regulations, making these washers safe for various industries without hazardous substances.
• Easy installation and compatibility with inch system fasteners, simplifying procurement and use in standard industrial setups.
• Cost-effective maintenance as the robust design minimizes wear and replacement needs, lowering long-term operational costs.

Professional Applications & Engineering Value

These USS flat washers are engineered to address common industrial challenges, such as joint loosening and material degradation under heavy loads. Made from hot-dipped galvanized steel, they provide exceptional corrosion resistance, which is crucial in outdoor or high-moisture environments like construction, marine, and infrastructure projects. The precise dimensions—2.375" ID and 4.75" OD—ensure a secure fit for 2 1/4" screw sizes, distributing pressure evenly to prevent bolt sinking and surface damage. This design enhances the longevity of assemblies in heavy-duty applications, such as machinery framing and structural steel connections, by reducing stress concentrations. Compliance with ASME B18.21.1 standards guarantees reliability, making these washers a trusted choice for engineers seeking durable, standards-compliant components that minimize downtime and maintenance costs.

Specification Summary & Compliance

This USS flat washer features an ID of 2.375", OD of 4.75", and thickness range of 0.193-0.248", designed for screw sizes of 2 1/4" with dimensional tolerances per ASME B18.21.1 specifications. It is manufactured from hot-dipped galvanized steel in the inch system and complies with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and adherence to industry standards for reliable performance in various engineering applications.