S-91812A233 0.53" ID x 0.77" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with dual top and bottom serrations that bite into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance in harsh environments thanks to premium 316 stainless steel construction
• Enhanced durability and wear resistance from case hardening to Rockwell C51 hardness, maintaining locking performance over repeated use
• Reliable fit and secure fastening with precise 0.53" ID designed specifically for 1/2" screws in inch measurement systems
• Optimized load distribution through a 0.77" OD, reducing surface pressure and material stress
• Consistent performance in heavy-duty applications with controlled thickness (0.070-0.090") ensuring uniform clamping force
• Compliance with stringent environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable industrial use

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer is engineered to solve critical vibration-induced loosening in demanding industrial settings. The dual serration design on both top and bottom surfaces creates a mechanical lock that resists rotational forces and shock loads, making it ideal for heavy machinery, transportation equipment, and marine applications where corrosion resistance is paramount. The case hardened treatment to Rockwell C51 ensures the serrations maintain their bite through multiple installation cycles, providing reliable vibration resistance without compromising the superior corrosion protection of 316 stainless steel. This combination addresses the common failure point of standard washers in high-vibration environments while meeting the dimensional requirements for 1/2" screw applications in inch-based systems.

Specification Summary & Compliance

This washer features precise dimensional specifications with 0.53" inner diameter, 0.77" outer diameter, and thickness ranging from 0.070" to 0.090" for consistent performance. Manufactured from 316 stainless steel with case hardening treatment achieving Rockwell C51 hardness, it delivers both corrosion resistance and mechanical durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.