S-90474A162 0.203" ID x 0.562" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, extending service life in demanding environments
• Precise dimensional fit with 0.203" ID and 0.562" OD ensuring optimal load distribution for No. 10 screws
• Enhanced durability through controlled thickness (0.036-0.045") providing consistent performance under pressure
• Industry-standard compliance with ASME B18.21.1 ensuring reliable mechanical performance and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable industrial use
• Versatile industrial application across machinery, equipment assembly, and construction projects requiring inch-system components
• Reduced maintenance needs thanks to the protective oxide layer preventing rust and degradation

Professional Applications & Engineering Value

These black-oxide steel flat washers deliver critical engineering solutions by addressing common industrial challenges like fastener corrosion and load distribution inefficiencies. The black-oxide surface treatment creates a robust barrier against moisture and chemicals, significantly reducing failure risks in humid or abrasive settings. Engineered to ASME B18.21.1 standards, they maintain precise 0.203" ID and 0.562" OD dimensions for perfect alignment with No. 10 screws, preventing loosening and distributing clamping forces evenly. This makes them ideal for industrial machinery assembly, automotive applications, and outdoor equipment where corrosion-resistant washers are essential for long-term structural integrity and reduced maintenance costs.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional and mechanical specifications, these flat washers ensure consistent quality and performance. The black-oxide steel construction provides reliable hardness and wear resistance, while the precise 0.203" inner diameter and 0.562" outer diameter with 0.036-0.045" thickness guarantee proper fit and function. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and regulatory adherence for global industrial supply chains.