S-91812A255 0.42" ID x 0.65" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through dual top and bottom serrations that create a powerful locking action, preventing fastener loosening in high-stress environments
• Exceptional corrosion resistance with black-oxide 316 stainless steel construction, ideal for harsh industrial and marine applications
• Enhanced durability and wear resistance from case hardening achieving Rockwell C46 hardness, extending service life under heavy loads
• Precise M10 metric compatibility with 0.42" ID and 0.65" OD ensuring perfect fit and optimal load distribution
• Reliable performance in extreme conditions with consistent 0.070-0.090" thickness maintaining uniform locking pressure
• Compliance with global standards including RoHS 3 and REACH, meeting stringent environmental and safety regulations
• Reduced maintenance requirements through robust material and construction, minimizing downtime in critical applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these M10 metric wedge lock washers solve critical vibration-induced loosening problems in machinery, automotive, and structural applications. The black-oxide 316 stainless steel construction provides superior corrosion resistance in chemically aggressive or marine environments, while the case hardened treatment ensures the Rockwell C46 hardness maintains serration integrity under repeated stress cycles. The dual-sided serration design creates multiple biting surfaces that resist rotational forces more effectively than single-sided alternatives, making them ideal for heavy-duty equipment, transportation systems, and infrastructure projects where safety and reliability are paramount. The precise metric dimensions ensure compatibility with M10 screw sizes while the controlled thickness guarantees consistent clamping force distribution.

Specification Summary & Compliance

This wedge lock washer features precise dimensional specifications with 0.42" inner diameter, 0.65" outer diameter, and 0.070-0.090" thickness range, engineered for M10 metric screw applications. Manufactured from case hardened 316 stainless steel with black-oxide finish, the component achieves Rockwell C46 hardness for optimal performance. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components. The dual serration design follows industry best practices for vibration-resistant fastening systems.