S-93281A104 0.41" ID x 0.65" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through wedge-lock design that maintains tension under dynamic loads
• Enhanced corrosion protection with zinc-flake coating for extended service life in harsh environments
• Double-sided serration grip on both top and bottom surfaces prevents loosening from both directions
• Precision inch sizing with 0.41" ID and 0.65" OD ensures perfect fit for 3/8" fasteners
• Exceptional hardness rating at Rockwell C46 provides lasting performance under high stress
• Consistent thickness control between 0.090-0.100" for reliable stacking and uniform pressure distribution
• Dual-surface engagement creates maximum friction lock without damaging mating surfaces

Professional Applications & Engineering Value

This heavy-duty spring lock washer addresses critical vibration-induced failure points in industrial machinery, automotive assemblies, and construction equipment. The zinc-flake-coated steel construction provides exceptional corrosion resistance while maintaining the Rockwell C46 hardness necessary for high-load applications. The innovative top and bottom serration design creates a bidirectional locking mechanism that effectively counters rotational forces from both directions, making it ideal for wedge lock applications where traditional washers fail. The precise inch system measurements ensure compatibility with standard 3/8" fasteners while the controlled thickness range guarantees consistent performance in stacked assemblies. This vibration resistant washer eliminates the need for secondary locking mechanisms, reducing assembly time and maintenance costs in demanding industrial environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 0.41" internal diameter and 0.65" outer diameter, this spring lock washer features controlled thickness between 0.090-0.100" for consistent performance. The product meets industry standards for inch system fasteners and incorporates zinc-flake coating that complies with RoHS and REACH environmental regulations. The Rockwell C46 hardness specification ensures mechanical properties suitable for heavy-duty applications, while the dual-sided serration pattern follows established wedge lock engineering principles for maximum vibration resistance in mechanical fastening systems.