S-90850A160 1.319" ID x 2.28" OD General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with precise 1.319" ID and 2.28" OD dimensions, preventing surface damage and loosening under high stress.
• Superior corrosion resistance from zinc yellow-chromate plating, ensuring long-term reliability in harsh industrial environments.
• High-strength performance with Grade 9 classification and Rockwell C40 hardness, capable of withstanding extreme mechanical loads.
• Accurate fit for 1 1/4" screws and consistent 0.234-0.266" thickness, providing reliable spacing and vibration resistance.
• Compliance with SAE standards and inch measurement system, guaranteeing interchangeability and quality in North American applications.
• Environmental responsibility through REACH compliance, meeting strict EU regulations for safe chemical usage.
• Enhanced durability in heavy-duty applications, reducing maintenance frequency and replacement costs.

Professional Applications & Engineering Value

This Grade 9 SAE flat washer is engineered to address critical challenges in heavy machinery, construction equipment, and automotive assemblies. The zinc yellow-chromate plated steel construction provides a robust barrier against rust and chemical exposure, extending service life in corrosive settings. Its high-strength Grade 9 rating and Rockwell C40 hardness ensure it maintains clamp load under dynamic stresses, preventing joint failure. With precise 1.319" ID and 2.28" OD dimensions, it offers optimal surface coverage for 1 1/4" screw applications, distributing pressure evenly to protect components from deformation. Ideal for industrial fastening systems requiring reliable vibration resistance and long-term structural integrity.

Specification Summary & Compliance

This washer adheres to SAE standards with inch system measurements: 1.319" ID, 2.28" OD, and thickness of 0.234-0.266". It meets Grade 9 strength classification and Rockwell C40 hardness for high mechanical performance. The product is REACH (EC 1907/2006) compliant as of 06/14/2023, ensuring it contains no SVHC above threshold limits, and is suitable for rigorous industrial applications requiring corrosion-resistant steel washers.