S-90391A175 4.395" ID x 6.063" OD ANSI/ABMA 8.2 Spring Lock Washers for Slotted Bearing Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through conical spring design that maintains constant tension under dynamic loads
• Enhanced locking security with external tooth location that bites into mating surfaces for positive anti-rotation performance
• Easy installation and alignment with chamfered bearing nut face style that guides proper seating
• Long-term reliability from durable steel construction that withstands industrial environments
• Precision compatibility with 4.325"-12 screw sizes for exact fitment in critical applications
• Reduced maintenance requirements through consistent performance meeting ANSI/ABMA 8.2 standards
• Environmental compliance assurance with RoHS 3 and REACH regulations for global manufacturing use

Professional Applications & Engineering Value

This spring lock washer delivers critical engineering solutions where vibration-induced loosening threatens assembly integrity. The conical-shaped design with external tooth location creates multiple biting points that dig into both the bearing surface and nut, providing superior locking action compared to flat washers. Manufactured from high-grade steel, this washer maintains its spring properties under repeated loading cycles, making it ideal for heavy machinery, industrial equipment, and structural applications where 4.325"-12 screw sizes are specified. The chamfered bearing nut face style ensures smooth installation while the precise dimensional control prevents galling and damage to expensive components. This combination of features addresses the fundamental challenge of maintaining clamp load in vibrating environments, reducing downtime and maintenance costs across multiple industrial sectors.

Specification Summary & Compliance

This precision spring lock washer features exact dimensional specifications including 4.395" ID, 6.063" OD, and 0.401" overall height with external tooth location. Manufactured to ANSI/ABMA 8.2 standards for consistent performance and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. Designed specifically for use with 4.325"-12 screw sizes and chamfered bearing nut face style configurations.