S-93550A115 1.625" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel finish, extending service life in demanding industrial environments.
• Optimal load distribution from the large 3" outer diameter, minimizing surface pressure and preventing material damage.
• Precise fit for 1 1/2" screws with a 1.625" inner diameter, ensuring secure fastening and reducing assembly errors.
• Consistent thickness (0.235-0.265") for reliable performance and uniform clamping force in heavy-duty applications.
• Compliance with RoHS 3 and REACH regulations, ensuring safe use in global markets and meeting environmental standards.
• Durable steel construction for long-term reliability under high stress and vibration conditions.
• Versatile inch system compatibility, making it suitable for a wide range of industrial machinery and equipment.

Professional Applications & Engineering Value

This black-oxide steel flat washer is engineered to address common industrial challenges such as fastener loosening and surface wear. Its large outer diameter (3") effectively distributes load across a wider area, protecting soft materials and reducing the risk of joint failure in heavy-duty applications like construction machinery, automotive assemblies, and structural frameworks. The black-oxide coating provides a protective layer against rust and corrosion, ensuring longevity in humid or outdoor environments. Paired with precise dimensions for 1 1/2" screw sizes, it simplifies installation and enhances safety in critical fastening systems, making it an ideal choice for engineers seeking reliable, compliant components.

Specification Summary & Compliance

This flat washer features an inner diameter of 1.625", outer diameter of 3", and thickness range of 0.235-0.265", designed for use with 1 1/2" screws in inch measurement systems. It is manufactured from black-oxide steel and complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel alloys, as well as REACH (EC 1907/2006) standards, ensuring adherence to environmental and safety regulations for industrial use.