S-90474A109 0.938" ID x 1.469" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The 1.469" outer diameter provides a wider bearing surface, effectively spreading pressure and preventing surface damage under 7/8" screw heads.
• Precision Fit for Secure Fastening - With a 0.938" inner diameter, this washer ensures a perfect fit on 7/8" screws, minimizing play and maintaining alignment in assemblies.
• Consistent Performance Under Load - A controlled thickness range of 0.090-0.112" guarantees uniform compression and reliable performance in demanding applications.
• Guaranteed Interchangeability - Manufactured to ASME B18.21.1 standards, ensuring dimensional consistency and compatibility with other compliant components.
• Durable Steel Construction - Made from robust steel, this washer offers excellent strength and resistance to deformation in industrial environments.
• Environmentally Responsible Sourcing - Compliant with RoHS 3 and REACH regulations, ensuring safe use in global markets and reducing environmental impact.
• Versatile Industrial Application - Suitable for a wide range of machinery, equipment, and structural assemblies requiring reliable, inch-system flat washers.

Professional Applications & Engineering Value

This steel flat washer is engineered to address common industrial fastening challenges, such as joint loosening and surface indentation. Its precise 0.938" ID and 1.469" OD dimensions ensure optimal load distribution when used with 7/8" screws, protecting softer materials from stress concentration. The ASME B18.21.1 compliance guarantees that every washer meets strict dimensional and quality standards, providing predictable performance in critical assemblies like heavy machinery, construction frameworks, and automotive components. The robust steel material resists corrosion and wear, extending service life in harsh environments, while the RoHS 3 and REACH compliance makes it suitable for international projects with stringent environmental regulations.

Specification Summary & Compliance

This flat washer conforms to ASME B18.21.1 specifications, ensuring precise dimensional tolerances for the inch measurement system. Key specifications include an inner diameter of 0.938", outer diameter of 1.469", and thickness between 0.090-0.112". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.