S-97913A116 0.51" ID x 0.77" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through wedge lock design that prevents loosening under dynamic loads
• Enhanced corrosion protection with black zinc-flake coating for extended service life in harsh environments
• Double-sided locking action with top and bottom serrations providing maximum grip on both surfaces
• Exceptional durability with Rockwell C48 hardness maintaining performance under heavy loads
• Precise M12 compatibility with 0.51" ID and 0.77" OD ensuring perfect fit for metric applications
• Reliable industrial performance with consistent 0.090-0.110" thickness for uniform clamping force
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This M12 metric wedge lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The black zinc-flake-coated steel construction provides superior corrosion resistance, making it ideal for outdoor equipment, automotive assemblies, and machinery exposed to moisture and chemicals. The dual-sided serration pattern creates a mechanical lock that prevents rotational loosening, solving the common problem of fastener failure in high-vibration environments. Engineered with Rockwell C48 hardness, this washer maintains its structural integrity under extreme pressure and repeated stress cycles. The combination of precise metric dimensions and advanced surface treatment ensures reliable performance in critical assemblies where safety and longevity are essential considerations for industrial engineers and maintenance professionals.

Specification Summary & Compliance

This heavy-duty washer features precise dimensional specifications including 0.51" inner diameter, 0.77" outer diameter, and thickness ranging from 0.090" to 0.110" for M12 screw applications. Manufactured from high-strength steel with black zinc-flake coating and hardened to Rockwell C48, it delivers consistent locking performance. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use in global industrial markets while meeting the stringent requirements for vibration-resistant fastening solutions.