S-98099A045 0.656" ID x 1.312" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-oxide finish for extended service life in demanding industrial environments
• Precise dimensional compatibility with 0.656" ID and 1.312" OD ensuring perfect fit for 5/8" screws
• Optimized load distribution through controlled 0.198-0.223" thickness range for enhanced joint integrity
• Regulatory compliance assurance with RoHS 3 and REACH standards for global supply chain compatibility
• Durable steel construction providing reliable performance in high-vibration applications
• Reduced maintenance requirements through corrosion-resistant properties that withstand harsh operating conditions
• Versatile industrial application across machinery, equipment assembly, and structural fastening systems

Professional Applications & Engineering Value

Engineered for industrial-grade reliability, these black-oxide steel flat washers address critical challenges in corrosion-prone environments while maintaining dimensional precision. The black-oxide surface treatment creates a protective barrier against moisture and chemical exposure, significantly extending component lifespan in outdoor equipment, machinery assemblies, and structural fastening systems. With precise 0.656" inner diameter and 1.312" outer diameter specifications, these washers ensure proper load distribution for 5/8" screw applications, preventing joint loosening and material deformation under dynamic loads. The controlled thickness range of 0.198-0.223" provides consistent performance across production batches, making them ideal for high-volume manufacturing where fastener reliability directly impacts operational safety and maintenance cycles.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.656" ID and 1.312" OD specifically designed for 5/8" screws. Manufactured from black-oxide steel with thickness tolerance of 0.198-0.223", the product maintains standard flat washer geometry for uniform load distribution. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and full REACH (EC 1907/2006) compliance as of January 17, 2023, meeting current environmental regulations for industrial hardware components.