S-90391A132 95 mm ID x 133 mm OD DIN 5406 Spring Lock Washers for Slotted Bearing Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the conical spring design, maintaining consistent clamping force under dynamic loads.
• Precise external tooth engagement prevents rotation and loosening, ensuring secure fastening in high-stress assemblies.
• Chamfered bearing nut face compatibility allows for smooth installation and uniform load distribution, reducing surface damage.
• Manufactured from durable steel for excellent mechanical strength and long-term reliability in industrial environments.
• Full compliance with DIN 5406 and DIN 981 standards guarantees dimensional accuracy and interchangeability in metric systems.
• RoHS 3 and REACH environmental compliance ensures safe use in regulated applications without hazardous substances.
• Optimized 95mm ID and 133mm OD dimensions provide exact fit for M95 screw sizes, minimizing assembly errors.

Professional Applications & Engineering Value

This M95 spring lock washer is engineered to address critical challenges in heavy-duty machinery, automotive, and construction sectors where vibration-induced loosening can lead to equipment failure. The external tooth design bites into mating surfaces, creating a positive lock that resists rotational forces, while the conical shape acts as a spring to compensate for thermal expansion and joint relaxation. Made from high-grade steel, it offers consistent performance under cyclic loading, and the chamfered face aligns perfectly with DIN 981 bearing nuts, preventing galling and ensuring even pressure distribution. Ideal for metric fastening systems requiring reliable, long-term retention without frequent maintenance.

Specification Summary & Compliance

This washer conforms to DIN 5406 for dimensional tolerances and DIN 981 for chamfered bearing nut face compatibility, with precise metrics: 95mm ID, 133mm OD, 1.750mm thickness, and 6.5mm overall height. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental safety and regulatory adherence for global supply chains.