S-91074A130 0.34" ID x 0.53" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through wedge lock design that maintains clamping force under extreme conditions
• Enhanced locking security with dual-sided serrations that bite into both fastener and surface materials
• Exceptional corrosion protection provided by zinc-flake coating for extended service life in harsh environments
• Reliable hardness performance with Rockwell C46 rating ensuring consistent locking action without deformation
• Dual-standard compatibility accommodating both 5/16" and M8 screw sizes for versatile application across systems
• Optimized dimensional stability with precise 0.34" ID and 0.53" OD for perfect fit and consistent performance
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

This wedge lock washer delivers critical vibration-resistant performance for demanding industrial applications where joint integrity is paramount. The zinc-flake-coated steel construction provides superior corrosion resistance in harsh operating environments, while the top and bottom serration design creates multiple biting surfaces that prevent rotational loosening under dynamic loads. Engineered with Rockwell C46 hardness, these washers maintain their locking capability through repeated stress cycles without compromising structural integrity. Ideal for heavy machinery, automotive assemblies, and structural frameworks, this dual-standard 5/16" M8 washer solves the common problem of fastener loosening in high-vibration applications, ensuring long-term joint security and reducing maintenance requirements across both inch and metric fastener systems.

Specification Summary & Compliance

This wedge lock washer features precise dimensional specifications including 0.34" inner diameter, 0.53" outer diameter, and 0.090-0.110" thickness range. Manufactured to accommodate both 5/16" and M8 screw sizes, the component demonstrates exacting dimensional control for reliable fit and function. The washer meets industry standards for locking washers with its dual-sided serration pattern and maintains Rockwell C46 hardness for consistent performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and material transparency for industrial applications worldwide.