S-90391A172 3.582" ID x 4.938" 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 teeth that bite into mating surfaces for reliable grip
• Easy installation and compatibility with chamfered bearing nut face design that facilitates smooth assembly
• Industry-standard reliability meeting ANSI/ABMA 8.2 specifications for consistent performance
• Environmental compliance assurance with RoHS 3 and REACH compliance for global industrial applications
• Precision dimensional fit with 3.582" ID specifically engineered for 3.527"-12 screw applications
• Durable steel construction providing long-lasting performance in demanding industrial environments

Professional Applications & Engineering Value

This steel spring lock washer delivers exceptional engineering value through its conical shape and external tooth design, specifically engineered to combat vibration-induced loosening in heavy machinery and equipment. The external teeth create multiple biting points that dig into both the nut and workpiece surfaces, providing superior resistance to rotational forces while the conical spring action maintains constant axial pressure. This dual-action locking mechanism is particularly valuable in applications subject to thermal cycling, dynamic loads, and continuous vibration. Manufactured to ANSI/ABMA 8.2 standards, this washer ensures reliable performance in industrial assembly, automotive manufacturing, and heavy equipment applications where vibration resistance is critical to operational safety and equipment longevity.

Specification Summary & Compliance

This spring lock washer features precise dimensional specifications including 3.582" inner diameter, 4.938" outer diameter, and 0.329" overall height, engineered for optimal performance with 3.527"-12 screw sizes. The washer conforms to ANSI/ABMA 8.2 manufacturing standards and incorporates a chamfered bearing nut face for enhanced installation. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring suitability for regulated industrial applications worldwide.