S-91475A116 0.44" ID x 0.776" OD ASME B18.21.1; MS35338-142 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance due to the split lock design, preventing fastener loosening in high-stress applications
• Excellent corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Optimal hardness (Rockwell C35) provides consistent spring tension and durability under repeated loading cycles
• Precise dimensional compatibility with 7/16" screws (0.44" ID, 0.776" OD, 0.109" thickness) for reliable fit and function
• Compliance with ASME B18.21.1 and MS35338-142 standards guarantees consistent quality and performance in industrial applications
• Environmental regulation compliance (RoHS 3 and REACH) ensures safe use across global markets and industries
• Standard split lock configuration offers easy installation and proven reliability in mechanical assemblies

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance in demanding industrial environments where fastener security is paramount. The passivated 18-8 stainless steel construction provides exceptional corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor conditions. The standard split lock design creates continuous spring tension against both the bearing surface and fastener head, effectively preventing loosening caused by vibration, thermal cycling, or dynamic loads. With its specific 0.44" ID matching 7/16" screws and Rockwell C35 hardness, this washer maintains its locking capability through numerous installation cycles without deformation. These characteristics make it particularly valuable in machinery assembly, automotive systems, electrical enclosures, and structural frameworks where reliable vibration resistance is essential for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.44" inner diameter, 0.776" outer diameter, and 0.109" thickness, engineered for compatibility with 7/16" fasteners. Manufactured to meet ASME B18.21.1 and MS35338-142 specifications, ensuring consistent performance and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and regulatory acceptance for industrial use worldwide.