S-90437A190 0.531" ID x 1.25" OD Adhesive-Back Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction for extended service life in harsh environments
• Reliable load distribution through precise SAE flat washer design that prevents surface damage
• Secure bonding capability with 0.039" acrylic adhesive backing for vibration-resistant installations
• High-temperature performance maintaining integrity up to 200°F for demanding industrial applications
• Consistent dimensional accuracy with 0.531" ID and 1.25" OD ensuring proper fit for 1/2" fasteners
• Enhanced durability with Rockwell B70 hardness rating for long-term mechanical performance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for industrial safety requirements

Professional Applications & Engineering Value

This 316 stainless steel SAE flat washer delivers exceptional engineering value in corrosive and high-stress environments where standard washers fail. The combination of marine-grade 316 stainless steel and precision SAE flat washer design provides superior corrosion resistance against chemicals, saltwater, and industrial atmospheres. The integrated acrylic adhesive backing solves critical vibration-related loosening issues in machinery, automotive, and marine applications, ensuring secure fastening without additional locking mechanisms. With its 0.059" thickness and Rockwell B70 hardness, this washer maintains structural integrity under heavy loads while the temperature resistance up to 200°F makes it ideal for industrial equipment, processing systems, and outdoor installations where thermal stability is paramount.

Specification Summary & Compliance

This industrial-grade washer features precise inch system dimensions with 0.531" ID and 1.25" OD compatible with 1/2" fasteners, manufactured to SAE standards for consistent performance. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance across global industrial markets. The acrylic adhesive maintains effectiveness within the specified temperature range of 50°F to 200°F, providing reliable performance across diverse operating conditions.