S-90391A166 2.588" ID x 3.578" OD ANSI/ABMA 8.2 Spring Lock Washers for Slotted Bearing Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the conical spring design that maintains consistent locking force under dynamic loads
• Enhanced assembly security with external teeth that bite into mating surfaces, preventing rotational loosening
• Optimized bearing surface contact with chamfered nut face compatibility for even load distribution
• Precision dimensional accuracy with 2.588" ID and 3.578" OD ensuring perfect fit for 2.548"-18 screw applications
• Long-term reliability with high-grade steel construction resisting deformation and wear in demanding environments
• Industry-standard compliance meeting ANSI/ABMA 8.2 specifications for consistent performance and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This spring lock washer delivers critical vibration damping and anti-loosening performance in heavy-duty mechanical systems. The conical shape and external tooth configuration work synergistically to maintain clamping force in high-vibration environments such as industrial machinery, automotive assemblies, and construction equipment. Engineered from durable steel, it withstands repeated loading cycles without losing its spring characteristics. The precise 2.588" inner diameter and 3.578" outer diameter ensure perfect compatibility with 2.548"-18 screw sizes, while the chamfered bearing nut face design prevents galling and ensures smooth installation. This ANSI/ABMA 8.2 certified component provides engineers with reliable, standardized performance for critical fastening applications where safety and reliability are paramount.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 2.588" ID, 3.578" OD, and 0.256" overall height with external tooth location for maximum locking effectiveness. Manufactured to ANSI/ABMA 8.2 standards for dimensional accuracy and performance consistency. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial applications. Designed specifically for use with 2.548"-18 screw sizes and chamfered bearing nut faces for optimal assembly performance.