S-93490A013 0.228" ID x 0.5" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to silicon bronze material composition
• Precise dimensional fit for No. 12 screws with 0.228" inner diameter ensuring secure fastening
• Enhanced load distribution with 0.5" outer diameter protecting surfaces from damage
• Consistent thickness control between 0.033-0.047" for reliable performance under compression
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
• Long-term durability in marine and chemical exposures without galvanic corrosion issues
• Inch-system compatibility for seamless integration with existing industrial equipment and standards

Professional Applications & Engineering Value

These silicon bronze flat washers deliver exceptional value in applications where corrosion resistance is critical. The copper alloy composition provides natural protection against saltwater, chemicals, and atmospheric exposure, making them ideal for marine hardware, chemical processing equipment, and coastal infrastructure. The precise 0.228" ID ensures perfect alignment with No. 12 screws, while the 0.5" OD distributes clamping force effectively to prevent surface damage to sensitive materials. Unlike standard steel washers, these silicon bronze washers eliminate galvanic corrosion concerns when used with compatible metals, significantly extending service life in demanding industrial environments. The controlled thickness variation maintains consistent performance in vibration-prone applications.

Specification Summary & Compliance

This flat washer features inch-system dimensions with 0.228" inner diameter, 0.5" outer diameter, and thickness ranging 0.033-0.047" specifically designed for No. 12 screw applications. Manufactured from silicon bronze material for optimal corrosion resistance, the washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring they contain no restricted substances above permitted thresholds. The product meets industry-standard dimensional tolerances for flat washers in inch measurement systems, providing reliable performance in various industrial fastening scenarios.