S-98119A123 2" ID x 3.5" OD ASTM F436 Type 1 Structural Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term reliability in harsh or outdoor environments.
• Exceptional load distribution thanks to the 2" ID and 3.5" OD dimensions, reducing surface pressure and preventing joint loosening.
• High hardness rating of Rockwell C38 for excellent wear resistance and durability under heavy loads and vibrations.
• Precise compatibility with 1 7/8" screws, providing a secure fit and optimal performance in mechanical assemblies.
• Compliance with ASTM F436 Type 1 standards guarantees consistent quality, dimensional accuracy, and mechanical properties.
• Thickness range of 0.178-0.280" offers flexibility for varying gap-filling needs while maintaining structural integrity.
• REACH compliance ensures safe use in industrial applications by adhering to environmental and health regulations.

Professional Applications & Engineering Value

This heavy-duty flat washer is engineered to address common industrial challenges such as corrosion, joint failure, and material degradation. Made from hot-dipped galvanized steel, it provides a robust barrier against moisture and chemicals, making it ideal for construction, machinery, and infrastructure projects. The precise 2" ID and 3.5" OD dimensions ensure even load distribution, minimizing stress concentrations and extending the life of fastened connections. With a Rockwell C38 hardness, it withstands high-impact and cyclic loads, reducing maintenance needs. Compliant with ASTM F436 Type 1 and REACH, this washer meets rigorous industry standards for safety and performance in demanding environments like bridges, industrial equipment, and marine applications.

Specification Summary & Compliance

This flat washer features an inner diameter of 2", outer diameter of 3.5", and thickness ranging from 0.178" to 0.280", designed for use with 1 7/8" screws. It adheres to ASTM F436 Type 1 specifications, ensuring consistent dimensional tolerances and mechanical properties. The washer is manufactured from hot-dipped galvanized steel with a hardness of Rockwell C38, providing reliable performance. It is REACH (EC 1907/2006) compliant as of June 14, 2023, with no SVHC above threshold levels, meeting environmental and safety standards for industrial use.