S-98180A140 0.469" ID x 0.922" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with precise 0.469" ID and 0.922" OD dimensions, reducing surface pressure and preventing joint failure
• Superior corrosion resistance from zinc-flake coating, ensuring long-term reliability in harsh industrial environments
• High-strength performance backed by Grade 8 classification and Rockwell C38 hardness for demanding applications
• Guaranteed dimensional accuracy through compliance with ASME B18.21.1 standards, ensuring perfect fit with 7/16" fasteners
• Enhanced durability with consistent 0.055-0.065" thickness, providing reliable vibration resistance and joint stability
• Environmental compliance meeting RoHS 3 and REACH regulations for safe, sustainable industrial use
• Optimized for inch-system assemblies with SAE designation, simplifying procurement and replacement in North American operations

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 SAE flat washer solves critical challenges in machinery assembly, structural steel connections, and automotive systems where vibration loosening and corrosion compromise joint integrity. The zinc-flake coated steel construction provides superior galvanic protection against moisture, chemicals, and atmospheric exposure, significantly extending service life in outdoor or corrosive environments. With its ASME B18.21.1-compliant dimensions and Rockwell C38 hardness, this 7/16" washer maintains clamping force under extreme loads, preventing bolt fatigue and surface damage to expensive components. Its precise 0.469" ID and 0.922" OD ensure optimal load distribution across fastened surfaces, making it ideal for high-stress applications in construction equipment, manufacturing machinery, and transportation infrastructure where reliability is non-negotiable.

Specification Summary & Compliance

This washer maintains dimensional compliance with ASME B18.21.1 standards for inch-system flat washers, featuring precise 0.469" inner diameter and 0.922" outer diameter with controlled 0.055-0.065" thickness tolerances. Manufactured from zinc-flake coated steel with Rockwell C38 hardness, it meets Grade 8 strength requirements for high-performance applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in global industrial markets.