S-91812A254 0.26" ID x 0.43" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with top and bottom serrations that bite into mating surfaces, preventing loosening under dynamic loads.
• Exceptional corrosion resistance thanks to the 316 Stainless Steel material with a black-oxide finish, ideal for harsh or outdoor industrial environments.
• Enhanced durability and wear resistance from case hardening to a Rockwell C46 hardness, ensuring a long service life even in high-stress applications.
• Reliable locking performance for M6 screws, providing a secure and consistent fit in metric assembly systems.
• Precise dimensional fit with an ID of 0.26" and OD of 0.43", designed for accurate installation and optimal force distribution.
• Compliance with major environmental regulations, being RoHS 3 and REACH compliant, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This M6 Metric Wedge Lock Washer is engineered to solve critical challenges in industrial settings where vibration and corrosion lead to joint failure and maintenance downtime. The black-oxide 316 Stainless Steel construction offers excellent resistance to chemicals and moisture, making it perfect for marine, chemical processing, and food industry applications. The dual-sided serration design ensures a powerful bite on both the bolt and nut surfaces, creating a permanent lock that withstands extreme operational vibrations. By utilizing a case hardened treatment, the washer maintains its structural integrity under repetitive stress, reducing the need for frequent retightening and enhancing the reliability of metric fastener systems in machinery, automotive, and structural assemblies.

Specification Summary & Compliance

This washer features precise dimensions with an Inside Diameter (ID) of 0.26", Outside Diameter (OD) of 0.43", and Thickness ranging from 0.080" to 0.100", designed for M6 screw sizes in metric applications. It is manufactured from 316 Stainless Steel with a black-oxide finish and undergoes case hardening to achieve a Rockwell C46 hardness. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally conscious industries.