S-90126A208 0.406" ID x 0.812" OD SAE Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The 0.812" outer diameter provides a wider bearing surface, reducing surface pressure and preventing damage to assembled materials.
• Superior Corrosion Resistance - Zinc-plated steel construction offers excellent protection against rust and environmental degradation, extending service life in demanding conditions.
• Reliable Fastener Compatibility - Precision-engineered 0.406" inner diameter ensures a perfect fit for 3/8" screws, minimizing loosening and maintaining joint integrity.
• High-Strength Performance - Manufactured to Grade 5 standards, this washer provides consistent mechanical properties for medium-duty to heavy-duty applications.
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH environmental directives, ensuring safe use in regulated industries and global markets.
• Dimensional Consistency - Tight thickness tolerance (0.051-0.080") guarantees uniform performance and reliable stacking in multi-washer assemblies.
• Broad Industrial Utility - SAE flat washer design conforms to established inch-system standards, ensuring interchangeability and ease of sourcing.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these SAE flat washers solve critical challenges in machinery assembly, automotive systems, and structural frameworks. The zinc-plated steel material provides essential corrosion resistance where moisture, chemicals, or outdoor exposure would compromise ordinary washers. The precise 0.406" ID creates a secure interface with 3/8" screws, preventing thread damage and maintaining clamp load under vibration. Combined with Grade 5 strength, this washer effectively distributes bearing stress across wider surfaces, protecting soft materials and preventing fastener embedment. This makes it ideal for heavy-duty washers applications requiring reliable performance in mechanical joints, electrical enclosures, and construction fixtures where dimensional stability and regulatory compliance are mandatory.

Specification Summary & Compliance

This flat washer conforms to SAE standards with an inner diameter of 0.406", outer diameter of 0.812", and thickness ranging 0.051-0.080". Manufactured from zinc-plated steel with Grade 5 mechanical properties, it is specifically designed for use with 3/8" screw size fasteners. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.