S-90391A126 70 mm ID x 98 mm OD DIN 5406 Spring Lock Washers for Slotted Bearing Nuts
Spring Lock Washers for Slotted Bearing Nuts
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through conical spring design that maintains constant tension under dynamic loads
- Positive locking action with external teeth that bite into mating surfaces for secure fastening
- Precision compatibility with M70 screws and DIN 981 bearing nuts featuring chamfered face style
- Durable steel construction ensures long-term reliability in demanding industrial environments
- Standardized dimensions (70mm ID, 98mm OD) guarantee consistent performance and easy replacement
- Regulatory compliance with RoHS 3 and REACH standards for safe global industrial use
- Optimized tooth configuration provides maximum surface contact while minimizing part deformation
Professional Applications & Engineering Value
This M70 external tooth spring lock washer delivers critical vibration resistance in high-stress mechanical assemblies. The conical spring design creates continuous axial pressure that compensates for thermal expansion, material relaxation, and operational vibrations - common failure points in rotating equipment and bearing applications. Manufactured from metric steel to DIN 5406 standards, this washer's external tooth configuration ensures positive locking by embedding into both the bearing nut and contact surface, preventing rotational loosening in machinery subjected to cyclical loads. The precise 70mm internal diameter and chamfered nut compatibility make it ideal for industrial bearing assemblies, conveyor systems, and heavy equipment where maintaining preload is essential for operational safety and reduced maintenance intervals.
Specification Summary & Compliance
This external tooth spring lock washer conforms to DIN 5406 specifications with precise metric dimensions: 70mm internal diameter, 98mm outer diameter, and 4.5mm overall height. The washer is engineered for compatibility with M70 fasteners and DIN 981 bearing nuts with chamfered face style. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for global industrial applications requiring strict regulatory adherence.
