S-90391A167 2.791" ID x 3.828" 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 constant tension under dynamic loads
• Enhanced anti-loosening performance with external tooth configuration that bites into mating surfaces for secure fastening
• Optimal bearing surface contact with chamfered nut face style that ensures proper seating and load distribution
• Precision dimensional compatibility with 2.751"-18 screw sizes and standardized inch measurements for reliable fit
• Rigorous quality assurance through compliance with ANSI/ABMA 8.2 standards for consistent performance
• Environmental responsibility with full RoHS 3 and REACH compliance for sustainable industrial applications
• Durable steel construction providing long-lasting performance in demanding industrial environments

Professional Applications & Engineering Value

This spring lock washer delivers exceptional engineering value in applications where vibration-induced loosening poses significant operational risks. The external tooth configuration creates multiple biting points that dig into both the bearing surface and fastener head, preventing rotational movement even under extreme vibration conditions. Manufactured from high-quality steel, this conical washer maintains its spring properties through repeated loading cycles, ensuring consistent clamping force over time. The chamfered bearing nut face style facilitates proper alignment and reduces stress concentrations, while the precise dimensional specifications (2.791" ID, 3.828" OD) guarantee compatibility with standard 2.751"-18 screw systems. Ideal for heavy machinery, automotive assemblies, and industrial equipment where reliable anti-loosening solutions are critical to operational safety and maintenance reduction.

Specification Summary & Compliance

This spring lock washer features inch system measurements with precise dimensional tolerances including 2.791" inner diameter and 3.828" outer diameter. The external tooth conical design meets ANSI/ABMA 8.2 specifications for quality and performance standards. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while supporting sustainable manufacturing practices.