S-90126A217 0.125" ID x 0.312" OD SAE Washers
SAE 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 corrosion protection with zinc-plated steel construction for extended service life in demanding industrial environments
- Enhanced load distribution across wider surface area to prevent joint loosening and material damage
- Excellent vibration resistance maintaining fastener integrity in high-stress applications
- Precision dimensional accuracy with 0.125" ID and 0.312" OD ensuring perfect fit for No. 4 screws
- Grade 5 strength rating providing reliable performance in heavy-duty fastening assemblies
- SAE standard compliance guaranteeing interchangeability and consistent quality across inch-system applications
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel SAE flat washer delivers critical engineering solutions for industrial equipment assembly, automotive manufacturing, and machinery maintenance. The zinc plating provides essential corrosion resistance in humid or chemically aggressive environments, while the SAE inch-system dimensions ensure perfect compatibility with No. 4 screws in North American equipment designs. The flat washer design effectively distributes clamping force across wider surfaces, preventing bolt head embedding and maintaining joint integrity under vibration and dynamic loads. These heavy-duty washers serve as essential components in electrical enclosures, structural frameworks, and mechanical assemblies where reliable load distribution and long-term fastener performance are paramount.
Specification Summary & Compliance
Manufactured to SAE standards with inch-system dimensions: 0.125" inner diameter, 0.312" outer diameter, and 0.025-0.040" thickness range. Constructed from zinc-plated steel with Grade 5 strength rating for heavy-duty applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in industrial markets worldwide.
