S-98029A117 1.625" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from the black-oxide steel finish, extending service life in harsh industrial environments
• Superior load distribution with a 3" outer diameter, preventing surface damage and joint loosening under heavy loads
• Precise compatibility for 1 1/2" screw sizes with a 1.625" inner diameter, ensuring secure fit and ease of assembly
• Robust durability from steel construction, maintaining structural integrity in demanding applications
• Compliance assurance with RoHS 3 and REACH regulations, meeting global environmental and safety standards
• Reliable thickness tolerance of 0.240-0.260", providing consistent performance and predictable installation
• Versatile inch system sizing for seamless integration with existing industrial equipment and standards

Professional Applications & Engineering Value

This black-oxide steel flat washer is engineered to address common industrial challenges such as galvanic corrosion, joint failure, and uneven load distribution. The black-oxide surface treatment provides a protective layer that significantly reduces oxidation and wear, making it ideal for outdoor machinery, construction assemblies, and automotive applications exposed to moisture and chemicals. Its large 3" outer diameter effectively spreads clamping force over a wider area, preventing surface indentation and maintaining bolt preload in heavy-duty washers for structural connections. Compatible with 1 1/2" screw sizes, this washer ensures reliable performance in high-vibration environments, reducing maintenance needs and enhancing the longevity of critical fastening systems.

Specification Summary & Compliance

This flat washer features an inner diameter of 1.625", outer diameter of 3", and thickness range of 0.240-0.260" for precise fit with 1 1/2" screw applications. Manufactured from black-oxide steel in inch measurements, it adheres to standard dimensional tolerances for industrial use. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel alloys and REACH (EC 1907/2006) as of January 17, 2023, ensuring environmental and regulatory safety for global supply chains.