S-90452A113 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for longer service life in harsh industrial environments
• Superior load distribution thanks to the 1.25" outer diameter, reducing surface pressure and preventing material damage
• Secure anti-rotation performance with the 0.7" square hole design that prevents washer movement during vibration or torque applications
• Precision dimensional control with 0.055-0.065" thickness ensuring consistent performance in assembly operations
• Compatibility with 5/8" fasteners for reliable integration into existing inch-system industrial equipment
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Heavy-duty construction providing reliable performance in high-stress mechanical applications

Professional Applications & Engineering Value

This zinc-plated steel square hole washer delivers critical engineering solutions for industrial applications where vibration resistance and corrosion protection are paramount. The square hole design specifically addresses common fastener rotation issues in machinery, construction, and heavy equipment assemblies, ensuring maintained clamping force under dynamic loads. The zinc plating provides essential sacrificial protection against oxidation and environmental exposure, significantly extending service life in outdoor or corrosive environments. With its 1.25" OD and precise 0.7" inside width, this washer optimally distributes bearing loads while accommodating standard 5/8" fasteners in inch-system applications. These features combine to reduce maintenance frequency and prevent premature assembly failure in demanding industrial settings.

Specification Summary & Compliance

Manufactured to precise dimensional standards with outer diameter of 1.25", thickness range of 0.055-0.065", and square inside width of 0.7" specifically designed for 5/8" fasteners in inch measurement systems. This heavy-duty washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international substance restriction standards for industrial components.