S-91812A256 0.51" ID x 0.77" 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 maintains tension under dynamic loads
- Enhanced corrosion protection with Black-Oxide 316 Stainless Steel construction for harsh environments
- Double-sided locking security with top and bottom serrations preventing rotation in both directions
- Exceptional durability from case hardening to Rockwell C46 for long service life
- Precise M12 compatibility with 0.51" ID and 0.77" OD ensuring proper fit and distribution of load
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
- Optimized thickness range (0.070-0.090") providing consistent performance across applications
Professional Applications & Engineering Value
This M12 metric wedge lock washer delivers critical vibration resistance in demanding industrial settings where fastener loosening can compromise safety and operational integrity. The Black-Oxide 316 Stainless Steel material provides exceptional corrosion resistance in chemical, marine, and outdoor applications, while the dual serration technology creates positive locking action on both contact surfaces. Case hardened to Rockwell C46, these washers maintain their locking capability through repeated stress cycles, making them ideal for heavy machinery, transportation equipment, and structural assemblies where reliable vibration-resistant performance is non-negotiable. The metric sizing ensures compatibility with international equipment standards.
Specification Summary & Compliance
This washer features precise dimensional specifications with 0.51" inner diameter, 0.77" outer diameter, and thickness ranging 0.070-0.090" for M12 screw applications. Manufactured to exacting standards with case hardened treatment achieving Rockwell C46 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial markets worldwide.
