S-91812A415 0.17" ID x 0.35" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through dual-sided serrations that bite into mating surfaces, preventing loosening under dynamic loads.
• Enhanced durability and wear resistance from case hardening to Rockwell C51, extending service life in harsh environments.
• Excellent corrosion resistance with 316 stainless steel material, ideal for marine, chemical, and outdoor applications.
• Versatile compatibility with both inch (No. 8) and metric (M4) screw sizes, simplifying inventory for global operations.
• Reliable locking performance due to the wedge lock design and precise dimensions (OD 0.35", ID 0.17", thickness 0.080-0.100").
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe, sustainable use.
• Reduced maintenance needs by maintaining secure fastening in high-vibration machinery and equipment.

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer is engineered to address critical challenges in industrial settings, such as fastener failure due to vibration and corrosion. The top and bottom serration design ensures a firm grip on both the bolt and surface, effectively resisting rotational forces in machinery, automotive assemblies, and structural applications. Made from 316 stainless steel, it offers superior resistance to chemicals, saltwater, and extreme temperatures, making it suitable for marine, oil and gas, and food processing industries. The case hardened treatment to Rockwell C51 enhances surface hardness without compromising ductility, reducing galling and wear over time. By integrating inch and metric compatibility (No. 8 and M4), it streamlines procurement and installation for multinational projects, delivering reliable locking performance that minimizes downtime and maintenance costs.

Specification Summary & Compliance

This washer features precise dimensions with an inner diameter of 0.17", outer diameter of 0.35", and thickness ranging from 0.080" to 0.100", designed for screw sizes No. 8 and M4. It adheres to standard manufacturing practices for wedge lock washers, including case hardening to achieve a hardness of Rockwell C51. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.