S-90474A183 0.406" ID x 0.734" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from nickel-plated brass construction, ensuring long-term reliability in harsh environments
• Precision dimensional fit with 0.406" ID specifically engineered for secure 3/8" screw applications
• Optimal load distribution through 0.734" outer diameter, preventing surface damage and maintaining joint integrity
• Consistent performance with controlled thickness range (0.056-0.071") for uniform compression and spacing
• Industry-standard compliance meeting ASME B18.21.1 specifications for dimensional accuracy and quality
• Environmental responsibility with full RoHS 3 and REACH compliance, safe for regulated applications
• Enhanced durability through brass material properties combined with protective nickel plating

Professional Applications & Engineering Value

These nickel-plated brass flat washers deliver exceptional engineering value in demanding industrial environments where corrosion resistance and dimensional precision are critical. The combination of brass substrate with nickel plating creates a robust barrier against oxidation and chemical degradation, making them ideal for electrical components, marine equipment, and plumbing systems exposed to moisture and corrosive elements. Engineered to ASME B18.21.1 standards, these flat washers maintain consistent thickness (0.056-0.071") and precise inner diameter (0.406") to ensure proper load distribution and prevent fastener loosening in 3/8" screw applications. The inch system measurements provide exact compatibility with North American industrial equipment, while the 0.734" outer diameter offers optimal surface coverage to protect sensitive materials from damage during torque application.

Specification Summary & Compliance

This flat washer features precise inch system dimensions with 0.406" inner diameter, 0.734" outer diameter, and controlled thickness range of 0.056-0.071" specifically designed for 3/8" screw size applications. Manufactured to meet ASME B18.21.1 dimensional and quality standards, ensuring consistent performance and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances and meeting current SVHC requirements as of June 14, 2023.