S-90474A189 0.469" ID x 0.875" OD ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Precise dimensional fit with 0.469" ID and 0.875" OD ensuring reliable performance with 7/16" screws
• Enhanced load distribution through controlled thickness (0.056-0.071") to prevent surface damage and loosening
• Long-term durability from stainless steel material, maintaining integrity under mechanical stress and varying temperatures
• Regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global markets
• Versatile inch system compatibility for seamless integration into existing industrial assemblies
• Cost-effective maintenance due to corrosion-resistant properties, reducing replacement frequency and downtime

Professional Applications & Engineering Value

This Black-Oxide 18-8 Stainless Steel flat washer addresses critical challenges in industrial settings where corrosion and mechanical wear compromise assembly longevity. The Black-Oxide surface treatment enhances oxidation resistance, making it suitable for outdoor equipment, marine hardware, and chemical processing applications. Engineered with precise 0.469" ID and 0.875" OD dimensions, it ensures a secure fit for 7/16" screws, distributing clamp load evenly to prevent joint failure. Its stainless steel composition withstands high-stress environments, from automotive frames to construction machinery, while the flat washer design simplifies installation and reduces maintenance costs by minimizing galvanic corrosion risks in mixed-material assemblies.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.469", outer diameter of 0.875", and thickness range of 0.056-0.071", designed specifically for 7/16" screw sizes in inch measurement systems. Manufactured from 18-8 Stainless Steel with Black-Oxide finish, it adheres to standard industrial tolerances for reliable performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global engineering projects.