S-91074A115 0.17" ID x 0.3" OD Extreme-Vibration-Resistant Wedge Lock Washers
Extreme-Vibration-Resistant Wedge Lock Washers
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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 wedge-lock design that prevents loosening under dynamic loads
- Enhanced corrosion protection with zinc-flake coating for extended service life in harsh environments
- Double-sided locking action with top and bottom serrations for maximum grip on both mating surfaces
- Exceptional hardness rating (Rockwell C46) maintains structural integrity under high clamping forces
- Dual-standard compatibility fits both No. 8 (inch) and M4 (metric) screw sizes for global applications
- Precise dimensional control with 0.17" ID and 0.3" OD ensures perfect fit and uniform load distribution
- Regulatory compliance meets RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
These zinc-flake-coated steel wedge lock washers deliver critical vibration resistance in demanding industrial applications where fastener failure is not an option. The dual serration design (top and bottom) creates multiple biting edges that dig into both the fastener head and base material, effectively resisting rotational forces that cause conventional washers to fail. The Rockwell C46 hardness rating ensures the serrations maintain their sharpness through repeated stress cycles, while the zinc-flake coating provides superior corrosion resistance compared to standard plating methods. Ideal for heavy machinery, automotive assemblies, and electrical enclosures where No. 8 and M4 screws require permanent, reliable locking performance in high-vibration environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 0.17" inner diameter, 0.3" outer diameter, and thickness ranging 0.060-0.080". The wedge lock washers feature controlled serration geometry for consistent locking performance and are produced in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Suitable for both inch (No. 8) and metric (M4) fastener systems, providing flexibility in global manufacturing applications while maintaining industrial-grade reliability.
