S-91812A819 1.35" ID x 1.91" OD Extreme-Vibration-Resistant Wedge Lock Washers
Extreme-Vibration-Resistant Wedge Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance due to the wedge lock design, preventing loosening under heavy loads and dynamic conditions.
- Enhanced corrosion resistance with 316 stainless steel material, ideal for harsh environments and extended service life.
- Reliable locking performance from dual top and bottom serrations that bite into mating surfaces for secure fastening.
- Exceptional durability with case hardening to Rockwell C51 hardness, resisting wear and deformation in demanding applications.
- Broad compatibility supporting both inch (1 1/4") and metric (M33) screw sizes, simplifying inventory for diverse projects.
- Precise dimensional fit with 1.35" ID and 1.91" OD, ensuring easy installation and optimal load distribution.
- Environmental compliance meeting RoHS 3 and REACH standards, supporting sustainable and safe industrial practices.
Professional Applications & Engineering Value
This 316 stainless steel wedge lock washer is engineered to address critical challenges in industrial settings, such as vibration-induced fastener failure and corrosion in aggressive environments. The dual serration on both top and bottom surfaces provides a mechanical locking action that grips firmly, eliminating the need for additional locking devices and reducing maintenance costs. Made from 316 stainless steel, it offers excellent resistance to chemicals, saltwater, and high humidity, making it suitable for marine, chemical processing, and outdoor infrastructure. The case hardened finish and Rockwell C51 hardness ensure it withstands high-stress applications without galling or wear, delivering reliable performance in heavy machinery, transportation equipment, and construction projects where safety and longevity are paramount.
Specification Summary & Compliance
This washer features precise dimensions with an ID of 1.35", OD of 1.91", and thickness ranging from 0.260" to 0.280", designed for screw sizes 1 1/4" and M33. It is manufactured to standard wedge lock specifications, ensuring consistent performance. The product is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for industrial use.
