S-98049A860 0.781" ID x 1.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 17-4 PH stainless steel, ensuring long-term reliability in harsh industrial environments.
• Superior mechanical strength with Rockwell C40 hardness, providing excellent load distribution and resistance to deformation under high stress.
• Precise dimensional fit with 0.781" inner diameter and 1.625" outer diameter, guaranteeing secure fastening for 3/4" screws without slippage.
• Enhanced durability and fatigue resistance due to the material's precipitation-hardening properties, reducing maintenance needs and downtime.
• Compliance with strict environmental standards including RoHS 3 and REACH, making it safe for global supply chains and eco-sensitive applications.
• Optimized for heavy-duty use in inch-based systems, offering consistent performance in machinery, construction, and automotive assemblies.
• Reliable surface protection that minimizes galling and wear, extending the service life of connected components.

Professional Applications & Engineering Value

This 17-4 PH stainless steel flat washer is engineered to address critical challenges in demanding industrial settings, such as corrosion-induced failure and mechanical stress. Its precipitation-hardened structure ensures high tensile strength and stability, making it ideal for heavy-duty applications in aerospace, marine, and chemical processing equipment. The precise 0.781" ID and 1.625" OD provide a secure fit for 3/4" screw sizes, preventing loosening under vibration and dynamic loads. By combining corrosion resistance with Rockwell C40 hardness, it reduces replacement frequency and enhances safety in industrial washers used in extreme temperatures and corrosive environments, delivering long-term cost savings and operational efficiency.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 0.781", outer diameter of 1.625", and thickness ranging from 0.136" to 0.161". It is manufactured from 17-4 PH stainless steel with a Rockwell C40 hardness for consistent performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use without hazardous substances.