S-99041A209 0.188" ID Square Washers
Square Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior load distribution with a wide 2" square design to prevent surface damage and fastener loosening under heavy loads
- Enhanced corrosion resistance through zinc-plated steel construction, ideal for harsh industrial environments
- Consistent dimensional stability with precise 0.188" inner diameter ensuring reliable fit for No. 8 screws
- Durable mechanical performance backed by Rockwell B40 hardness for long-term wear resistance
- Optimized thickness range (0.054-0.066") providing flexibility for various clamping applications
- Full regulatory compliance with RoHS 3 and REACH standards for safe, sustainable industrial use
- Broad compatibility with inch-system fasteners, simplifying procurement and inventory management
Professional Applications & Engineering Value
This zinc-plated steel square washer delivers critical engineering solutions by addressing common industrial challenges like surface marring, vibration-induced loosening, and corrosion. Its 2" width and square geometry significantly increase bearing surface area, distributing clamp load more effectively than standard round washers—preventing material deformation in soft substrates. The Rockwell B40 hardness ensures the washer maintains its shape under sustained pressure, while the zinc plating provides a sacrificial layer against rust in humid or outdoor settings. Commonly used in structural assemblies, machinery mounting, and electrical enclosures, this heavy-duty washer offers reliable performance where precise load distribution and corrosion resistance are paramount for No. 8 screw applications.
Specification Summary & Compliance
Manufactured to exact inch system dimensions: 0.188" inner diameter, 2" width, and 0.054-0.066" thickness range. Complies with industry standards for material consistency and dimensional accuracy. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring environmental safety and unrestricted use across global industrial markets.
