S-93279A400 12.3 mm ID x 21.7 mm OD ASME B18.21.2M Split Lock Washers
Split 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 prevents fastener loosening in high-stress applications
- Blue-dyed steel construction provides excellent corrosion protection and easy visual identification
- Rockwell C38 hardness rating ensures long-term durability and consistent locking performance
- Precision-engineered dimensions (12.3mm ID, 21.7mm OD, 3.8mm thickness) guarantee perfect fit for M12 fasteners
- ASME B18.21.2M compliance delivers reliable performance meeting international engineering standards
- Environmental regulation compliance with RoHS 3 and REACH ensures safe use across global markets
- Standard split lock design provides immediate spring action and reliable tension maintenance
Professional Applications & Engineering Value
This M12 metric split lock washer delivers critical vibration resistance in demanding industrial environments where mechanical fasteners face constant stress and movement. The blue-dyed steel construction not only provides enhanced corrosion resistance but also enables quick visual identification during assembly and maintenance procedures. Engineered to ASME B18.21.2M standards, these washers maintain consistent spring tension that prevents fastener back-off in machinery, automotive assemblies, and heavy equipment applications. The Rockwell C38 hardness ensures the split lock design maintains its structural integrity through repeated compression cycles, making it ideal for applications requiring reliable, long-term locking performance without the need for additional locking compounds or complex installation procedures.
Specification Summary & Compliance
This split lock washer features precision dimensions of 12.3mm internal diameter, 21.7mm external diameter, and 3.8mm thickness, specifically engineered for M12 fastener applications. Manufactured in compliance with ASME B18.21.2M standards for mechanical properties and dimensional requirements. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and global market acceptance.
