S-91090A119 0.344" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh environments
• Precise dimensional fit with 0.344" ID and 1.5" OD ensuring perfect alignment with 5/16" fasteners
• Optimal load distribution across wide 1.5" outer diameter surface to prevent surface damage and loosening
• Consistent thickness control (0.042-0.051") for uniform pressure distribution in assembled components
• Global compliance assurance meeting RoHS 3 and REACH environmental standards for international projects
• Inch system compatibility designed for seamless integration with North American equipment and specifications
• Reliable performance in industrial applications where vibration resistance and joint integrity are critical

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 5/16" flat washers provide essential protection against corrosion through zinc-plated steel construction, making them ideal for outdoor equipment, machinery assemblies, and structural applications where moisture exposure is common. The precise 0.344" ID ensures secure fitment with standard 5/16" fasteners while the generous 1.5" OD distributes clamping force effectively across wider surfaces, preventing material deformation and maintaining joint integrity under dynamic loads. These inch system washers solve common assembly challenges by offering reliable corrosion resistance without compromising dimensional accuracy, making them particularly valuable for maintenance operations, manufacturing equipment, and infrastructure projects requiring long-term reliability.

Specification Summary & Compliance

This flat washer features precise dimensional specifications including 0.344" inner diameter, 1.5" outer diameter, and thickness range of 0.042-0.051" designed for 5/16" screw applications. Manufactured from zinc-plated steel for consistent performance, the product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across various industrial sectors while meeting international regulatory requirements for hazardous substance restrictions.