S-90126A233 1.375" ID x 2.5" OD SAE Washers

Key Features & Benefits at a Glance

• Exceptional Load Distribution: With a 2.5" outer diameter, this washer spreads force over a wider area, protecting surfaces and preventing fastener loosening in heavy-duty applications.
• Superior Corrosion Resistance: The zinc-plated steel construction provides a durable barrier against rust and environmental degradation, extending the service life of your assembly.
• High-Strength Reliability: As a Grade 8 component, it offers excellent tensile strength and is engineered to withstand high-stress and high-vibration environments.
• Precision Fit and Alignment: The 1.375" inner diameter is precisely sized for 1 1/4" screws, ensuring easy installation and optimal alignment for a secure fit.
• Enhanced Durability: A Rockwell C38 hardness rating ensures the washer maintains its shape and function under significant pressure and load.
• Industry Standard Compliance: Manufactured to SAE standards, guaranteeing consistent quality, dimensions, and performance expected in professional settings.
• Regulatory Safety Assurance: Compliant with RoHS 3 and REACH regulations, ensuring the product is safe for use and free from hazardous substances.

Professional Applications & Engineering Value

This Grade 8 zinc-plated steel flat washer is engineered to solve critical challenges in demanding industrial applications. Its robust SAE standard design and high Rockwell C38 hardness prevent embedding and deformation under heavy loads, a common failure point in machinery, construction, and automotive assemblies. The zinc plating offers essential corrosion resistance, making it ideal for environments exposed to moisture or chemicals. By providing a large bearing surface (2.5" OD), it effectively distributes clamp load, reducing stress concentration on connected materials and preventing joint failure. This makes it a vital component for securing 1 1/4" screw fastenings in structural frameworks, heavy equipment, and other high-integrity connections where reliability is non-negotiable.

Specification Summary & Compliance

This washer conforms to SAE standards in the inch system with an Inner Diameter (ID) of 1.375", Outer Diameter (OD) of 2.5", and a Thickness range of 0.136" - 0.192". It is manufactured from zinc-plated steel and is designated for use with a 1 1/4" screw size. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial use.