S-93490A035 0.688" ID x 1.5" OD General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments due to silicon bronze material composition
• Precise dimensional fit for 5/8" screws with 0.688" inner diameter ensuring secure fastening
• Optimized load distribution with 1.5" outer diameter to prevent surface damage and loosening
• Consistent thickness tolerance (0.084-0.098") for reliable performance in repetitive assembly applications
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries
• Superior durability in marine and chemical exposures where standard steel washers would fail
• Inch system compatibility for seamless integration with North American industrial equipment and specifications

Professional Applications & Engineering Value

These silicon bronze flat washers deliver critical protection in applications where corrosion resistance determines component lifespan. The copper alloy composition provides inherent immunity to saltwater degradation, making them ideal for marine hardware, coastal construction, and chemical processing equipment. Unlike plated alternatives that can fail when coatings wear, the homogeneous silicon bronze material maintains integrity throughout the washer's thickness. The precise 0.688" ID ensures proper centering on 5/8" fasteners while the 1.5" OD distributes clamp load effectively across softer materials or painted surfaces. This combination addresses common failure points in industrial assemblies exposed to moisture, chemicals, or atmospheric corrosion.

Specification Summary & Compliance

Manufactured to standard inch dimensions with 0.688" inner diameter, 1.5" outer diameter, and 0.084-0.098" thickness range for consistent performance. These flat washers comply with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical safety. The silicon bronze construction provides natural corrosion resistance without additional plating or coatings, making them suitable for demanding industrial environments where regulatory compliance and material performance are equally critical.