S-90895A208 0.331" ID x 0.512" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
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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 with dual top and bottom serrations that maintain secure fastening under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh environments
- Precision dimensional compatibility with both 5/16" and M8 screw sizes, eliminating cross-threading risks
- Exceptional mechanical durability from Rockwell C38 hardness rating that prevents deformation under high torque
- Reliable locking performance through spring design that compensates for thermal expansion and material relaxation
- Global regulatory compliance meeting RoHS 3 and REACH standards for international supply chain integration
- Optimized load distribution with 0.512" OD providing wider surface contact to prevent joint damage
Professional Applications & Engineering Value
This spring lock washer addresses critical vibration-induced loosening in industrial assemblies through its dual serration technology. The zinc-plated steel construction provides essential corrosion resistance for outdoor equipment, automotive subsystems, and machinery exposed to environmental stressors. With precision-engineered dimensions (0.331" ID, 0.512" OD), it ensures perfect fitment for both 5/16" and M8 fasteners, making it ideal for maintenance operations and OEM manufacturing across imperial and metric systems. The Rockwell C38 hardness maintains structural integrity in high-torque applications, while the spring mechanism continuously applies compensating force to counter bolt relaxation - a fundamental solution for vibration-resistant assemblies in construction, transportation, and heavy equipment industries.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 0.331" internal diameter and 0.512" external diameter. The zinc-plated steel construction meets industry requirements for corrosion protection and mechanical performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance. The Rockwell C38 hardness specification guarantees consistent performance across temperature variations and loading conditions.
