S-95584A318 0.32" ID x 0.61" OD ASME B18.21.1 External-Tooth Lock Washers
External-Tooth 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 with external teeth that bite into mating surfaces to prevent loosening under dynamic loads
- Exceptional corrosion resistance through Black Oxide 18-8 Stainless Steel construction for long service life in harsh environments
- Optimized dimensional precision with 0.32" ID and 0.61" OD ensuring perfect fit for 5/16" fasteners
- Enhanced durability with Rockwell B88 hardness maintaining tooth integrity through repeated installation cycles
- Industry-standard compliance meeting ASME B18.21.1 specifications for reliable performance in mechanical applications
- Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries
- Consistent thickness control between 0.028-0.034" for uniform clamping force distribution
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these external tooth lock washers solve critical vibration-induced loosening problems in machinery, automotive assemblies, and structural frameworks. The Black Oxide surface treatment on 18-8 Stainless Steel provides superior corrosion resistance while maintaining the material's inherent strength. The precisely positioned external teeth create multiple biting points that dig into both the fastener head and workpiece surface, distributing clamping force evenly and maintaining tension under extreme vibration conditions. This design eliminates the need for additional locking mechanisms, reducing assembly time and maintenance costs in heavy-duty applications where reliability is paramount.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 standards with precise dimensions: 0.32" ID, 0.61" OD, and thickness range of 0.028-0.034". The 18-8 Stainless Steel construction achieves Rockwell B88 hardness for optimal performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance across global markets.
