S-91090A109 0.281" ID x 1.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments.
• Optimal load distribution due to precise dimensions (0.281" ID x 1.25" OD), reducing stress on connected components.
• Accurate fit for 1/4" screws, ensuring secure fastening and minimizing loosening in vibration-prone applications.
• Consistent thickness (0.042-0.051") for uniform pressure application, enhancing joint integrity and assembly reliability.
• Compliance with RoHS 3 and REACH regulations, ensuring safe, environmentally responsible use in global supply chains.
• Durable steel material providing high strength and wear resistance for long-term performance in demanding settings.
• Easy integration with inch-system components, simplifying procurement and assembly in standard industrial setups.

Professional Applications & Engineering Value

This zinc-plated steel flat washer is engineered to address common industrial challenges such as component wear, corrosion, and uneven load distribution. Its precise 0.281" ID and 1.25" OD dimensions ensure a perfect match for 1/4" screw applications, preventing misalignment and reducing the risk of fastener failure. The zinc plating offers a protective barrier against moisture and chemicals, making it ideal for outdoor machinery, automotive assemblies, and electrical enclosures where corrosion resistance is critical. By evenly dispersing load forces, this washer minimizes stress concentrations, prolonging the lifespan of bolted joints in industrial washers and heavy-duty equipment. Its compliance with international standards ensures reliability in RoHS and REACH regulated environments, supporting seamless integration into global manufacturing processes.

Specification Summary & Compliance

This flat washer adheres to standard inch-system dimensions with an inner diameter of 0.281", outer diameter of 1.25", and thickness range of 0.042-0.051", designed for use with 1/4" screws. Manufactured from zinc-plated steel, it meets industry specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for environmentally conscious industrial applications.