S-98023A115 0.281" ID x 0.625" OD ASME B18.21.1 General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with a 0.625" outer diameter, reducing surface pressure and preventing damage to assembled materials.
• Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments.
• High tensile strength and durability with Grade 8 classification and Rockwell C38 hardness, ensuring reliable performance under heavy loads.
• Precise fit and alignment due to 0.281" inner diameter, designed specifically for 1/4" screws to minimize loosening.
• Compliance with industry standards per ASME B18.21.1, guaranteeing consistent quality and interchangeability.
• Environmental and safety adherence with RoHS 3 and REACH compliance, making it suitable for regulated applications.
• Versatile thickness range from 0.051" to 0.080", accommodating various assembly tolerances and compression needs.

Professional Applications & Engineering Value

This Grade 8 flat washer is engineered to address critical challenges in heavy-duty industrial settings, such as vibration-induced loosening and material fatigue. Constructed from zinc yellow-chromate plated steel, it provides a robust barrier against rust and chemical exposure, ideal for outdoor machinery, automotive assemblies, and construction equipment. The precise 1/4" screw size compatibility and ASME B18.21.1 conformity ensure seamless integration into existing inch system fastening solutions, reducing downtime and maintenance costs. By distributing clamp load evenly, it prevents bolt head embedding and surface damage, enhancing the longevity of connected components in high-stress applications.

Specification Summary & Compliance

This washer adheres to ASME B18.21.1 standards, with an inner diameter of 0.281", outer diameter of 0.625", and thickness ranging from 0.051" to 0.080". It is manufactured from zinc yellow-chromate plated steel with a Rockwell C38 hardness and meets Grade 8 strength requirements. 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 global industrial use.