S-90391A139 130 mm ID x 175 mm OD DIN 5406 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 to prevent loosening
• Precision compatibility with M130 screws and DIN 981 chamfered bearing nuts for seamless integration
• Durable steel construction ensures long-term reliability in demanding industrial environments
• Optimized dimensional accuracy with 130mm ID and 175mm OD providing perfect fit for metric applications
• Reduced assembly stress with chamfered bearing nut face style for smoother installation
• Compliance assurance meeting DIN 5406 standards for consistent performance and interchangeability

Professional Applications & Engineering Value

This M130 spring lock washer delivers exceptional engineering value in applications where vibration resistance is critical. The conical shape with external teeth creates a spring-like action that maintains preload and prevents back-off in machinery, automotive assemblies, and heavy equipment. Manufactured from high-quality steel and engineered to DIN 5406 standards, this washer solves the common industrial problem of fastener loosening under cyclic loading. The external tooth configuration ensures maximum bite into both the bearing surface and nut, while the chamfered face style accommodates DIN 981 bearing nuts for perfect alignment. This combination of features makes it ideal for industrial fastening applications requiring reliable, long-term performance in high-vibration environments.

Specification Summary & Compliance

This spring lock washer features precise metric dimensions with 130mm inner diameter, 175mm outer diameter, 2.0mm thickness, and 8mm overall height. Manufactured to DIN 5406 standards with external tooth location and conical shape, it ensures dimensional accuracy and reliable performance. The washer is compatible with DIN 981 bearing nuts featuring chamfered face style. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for various industrial applications with environmental requirements.