S-90437A180 0.5" ID x 1.125" OD Adhesive-Back Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction
• Enhanced load distribution and joint integrity from Rockwell B70 hardness and precise SAE dimensions
• Secure, permanent bonding with a 0.039" thick acrylic adhesive backing that eliminates shifting
• Reliable performance across temperatures from 50°F to 200°F, suitable for varied operating conditions
• Precise fit for 7/16" screws with 0.5" ID and 1.125" OD, ensuring easy installation and alignment
• Compliance with global standards including RoHS 3 and REACH, meeting strict industrial and environmental regulations
• Long-term durability with a flat washer design that resists wear and maintains performance under stress

Professional Applications & Engineering Value

This 316 stainless steel SAE flat washer is engineered to address critical challenges in industrial settings where corrosion, vibration, and temperature fluctuations are common. The acrylic adhesive backing provides a robust, permanent bond that prevents loosening in high-vibration machinery, reducing maintenance needs and downtime. Its corrosion-resistant 316 stainless steel material excels in harsh environments like marine, chemical processing, and outdoor equipment, ensuring longevity even when exposed to moisture and chemicals. The precise SAE dimensions (1.125" OD x 0.5" ID) guarantee a perfect fit for 7/16" screw size applications, facilitating quick assembly and reliable load distribution. By combining high Rockwell B70 hardness with a temperature range of 50°F to 200°F, this washer delivers consistent performance in automotive, construction, and manufacturing sectors, enhancing the reliability of bolted connections.

Specification Summary & Compliance

This washer adheres to SAE standards with precise dimensions: 1.125" OD, 0.5" ID, and 0.059" thickness, ensuring accurate fit and function for 7/16" screw size. It is manufactured from 316 stainless steel with a hardness of Rockwell B70 for optimal strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for industrial use and environmental standards.