S-90391A123 55 mm ID x 81 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
- Enhanced locking security with external teeth that bite into mating surfaces for reliable fastening
- Precision dimensional compatibility with M55 screws and chamfered bearing nuts for perfect fitment
- Long-term reliability with high-quality steel construction resisting deformation and wear
- Industry-standard compliance meeting DIN 5406 and DIN 981 specifications for consistent performance
- Environmental responsibility with full RoHS 3 and REACH compliance for sustainable operations
- Optimized load distribution through precise 55mm ID and 81mm OD dimensions
Professional Applications & Engineering Value
This M55 spring lock washer delivers critical vibration resistance in demanding industrial environments where fastener loosening can compromise safety and operational integrity. The conical spring lock washer design creates continuous spring pressure that counters vibrational forces, while the external teeth location provides aggressive biting action into both the bearing surface and nut face. Manufactured from durable steel material and engineered to DIN 5406 and DIN 981 standards, this metric system washer is particularly valuable in heavy machinery, automotive assemblies, and industrial equipment where chamfered bearing nut face style compatibility ensures proper seating and load distribution. The precise 1.250mm thickness and 4.5mm overall height maintain optimal spring characteristics without compromising installation clearance.
Specification Summary & Compliance
This metric spring lock washer features precise dimensions of 55mm internal diameter and 81mm outer diameter with 1.250mm thickness and 4.5mm overall height. Manufactured to DIN 5406 for spring lock washers and DIN 981 for bearing nuts, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest substance restriction requirements for industrial applications worldwide.
