S-90850A130 1.069" ID x 2.03" OD General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with a 2.03" outer diameter to prevent surface damage and embedment in softer materials
• Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• High-strength Grade 9 classification ensures reliable performance under heavy loads and vibration
• Precise 1.069" inner diameter for accurate fit and secure fastening with 1" screws, reducing installation errors
• Enhanced durability with Rockwell C40 hardness, resisting deformation and maintaining integrity over time
• Compliance with REACH regulations for safe use in various industries without hazardous substance concerns
• SAE standard design guarantees interchangeability and compatibility with existing inch-system assemblies

Professional Applications & Engineering Value

This Grade 9 SAE flat washer is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, construction equipment, and automotive systems. The zinc yellow-chromate plated steel construction provides excellent corrosion protection, reducing maintenance costs and downtime in corrosive environments. With its precise 1.069" ID and 2.03" OD, it ensures optimal load distribution, preventing joint failure and material fatigue under high stress. The Rockwell C40 hardness and Grade 9 strength make it ideal for applications requiring resistance to vibration and extreme forces, enhancing the longevity and reliability of your fastening systems while complying with industry standards.

Specification Summary & Compliance

This washer adheres to SAE standards in the inch system, with an inner diameter of 1.069", outer diameter of 2.03", and thickness ranging from 0.146" to 0.174" for precise dimensional control. It is manufactured from zinc yellow-chromate plated steel with a hardness of Rockwell C40 and meets Grade 9 strength requirements. The product is fully compliant with REACH (EC 1907/2006) regulations as of June 14, 2023, ensuring no use of Substances of Very High Concern (SVHC) above threshold limits, and is suitable for use with 1" screw sizes in demanding industrial settings.