S-90474A107 0.344" ID x 0.625" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution – The 0.625" OD and 0.344" ID provide a wide bearing surface, reducing surface pressure and preventing damage to assembled materials.
• Precision Fit for 5/16" Screws – Accurate inner diameter ensures secure seating and alignment, minimizing loosening and vibration in mechanical assemblies.
• Durable Steel Construction – Manufactured from robust steel for reliable performance under various industrial conditions and repeated use.
• Consistent Thickness Control – Thickness range of 0.056-0.071" ensures uniform compression and reliable fastening in diverse applications.
• Compliance with ASME B18.21.1 – Meets recognized industry standards for dimensional accuracy and quality, ensuring interchangeability and reliability.
• Environmental & Safety Compliance – RoHS 3 and REACH compliant, making them safe for use in regulated industries and environmentally conscious projects.
• Versatile Industrial Use – Suitable for a wide range of machinery, equipment, and structural assemblies requiring dependable flat washers.

Professional Applications & Engineering Value

This steel flat washer is engineered to address common challenges in industrial fastening, such as surface damage, bolt loosening, and uneven load distribution. Its inch system dimensions and precise ID for 5/16" screws ensure a perfect fit, reducing the risk of assembly failures. The flat washer design distributes clamping force evenly, protecting soft materials and extending the life of connected components. Made from high-quality steel, it offers excellent durability and resistance to deformation under stress. Ideal for use in machinery, automotive, and construction applications, this washer enhances the reliability and safety of industrial assemblies, supporting efficient maintenance and production processes.

Specification Summary & Compliance

This flat washer features an outer diameter of 0.625", inner diameter of 0.344", and thickness between 0.056-0.071", designed specifically for 5/16" screws. It conforms to ASME B18.21.1 standards, ensuring precise dimensional tolerances and consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer applications without hazardous substances.