S-90474A157 0.531" ID x 1.25" OD ASME Washers

Key Features & Benefits at a Glance

• Precise Fit for 1/2" Screws: 0.531" inner diameter ensures a secure and accurate fit, reducing installation errors and improving assembly efficiency.
• Enhanced Load Distribution: 1.25" outer diameter provides a wider surface area, minimizing surface pressure and preventing damage to connected materials.
• Superior Durability: Made from high-strength steel with a Rockwell B80 hardness, offering excellent resistance to wear, deformation, and long-term mechanical stress.
• Consistent Thickness Control: 0.080-0.115" thickness range ensures uniform performance and reliable fastening in various industrial environments.
• Environmental Compliance: RoHS 3 and REACH compliant, making it safe for use in regulated industries and supporting your sustainability goals.
• Broad Industrial Suitability: Designed for inch-system applications, this flat washer is ideal for heavy-duty machinery, construction, and manufacturing setups.
• Cost-Effective Maintenance: Durable steel construction reduces the need for frequent replacements, lowering long-term operational costs.

Professional Applications & Engineering Value

This steel flat washer is engineered to address common industrial challenges such as joint loosening, material indentation, and corrosion-related failures. Its 0.531" ID and 1.25" OD provide optimal load distribution, which is critical in heavy-duty applications like structural bolting, machinery assembly, and automotive frameworks. The Rockwell B80 hardness ensures that the washer maintains its shape under high stress, preventing premature wear. Additionally, the RoHS and REACH compliance makes it suitable for use in environmentally sensitive sectors, including electronics and aerospace, where regulatory adherence is mandatory. By offering reliable performance and compliance, this washer enhances the longevity and safety of your fastening systems.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 0.531", outer diameter of 1.25", and thickness ranging from 0.080" to 0.115". It is designed for use with 1/2" screws and manufactured from steel with a hardness of Rockwell B80. The product conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring it is free from hazardous substances and compliant with international environmental regulations for industrial components.