S-90474A114 0.406" ID x 1.25" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
• Exceptional load distribution due to precise 1.25" OD and 0.406" ID dimensions, preventing surface damage and joint loosening
• High-strength performance backed by Grade 8 classification and Rockwell C38 hardness for demanding applications
• Reliable dimensional consistency manufactured to ASME B18.21.1 standards, ensuring perfect fit with 3/8" fasteners
• Enhanced durability with 0.090-0.112" thickness range, providing optimal compression resistance and vibration dampening
• Environmental compliance meeting RoHS 3 and REACH regulations, safe for global industrial supply chains
• Optimized for inch-system assemblies with precise flat washer geometry, reducing installation time and maintenance costs

Professional Applications & Engineering Value

This Grade 8 flat washer delivers critical engineering solutions for heavy-duty mechanical systems. The zinc yellow-chromate plated steel construction provides exceptional corrosion protection in manufacturing plants, construction equipment, and automotive assemblies where exposure to moisture and chemicals is common. With Rockwell C38 hardness and ASME B18.21.1 compliance, it maintains clamp load under extreme vibration and thermal cycling, preventing joint failure in 3/8" fastener applications. The precise inner diameter (0.406") and outer diameter (1.25") ensure uniform pressure distribution across mating surfaces, protecting expensive components from galling and deformation while extending maintenance intervals in industrial washers applications.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with inch system dimensions: 0.406" ID, 1.25" OD, and 0.090-0.112" thickness range. Features Grade 8 strength classification with Rockwell C38 hardness for high-stress applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, including the latest SVHC updates. Designed specifically for 3/8" screw sizes with zinc yellow-chromate plated steel finish for corrosion resistance.