S-97079A101 4.3 mm ID x 8 mm OD DIN 137A Heavy-Vibration-Resistant Spring Lock Washers
Heavy-Vibration-Resistant Spring 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 with curved spring design to prevent fastener loosening under dynamic loads
- Exceptional corrosion resistance from 316 stainless steel construction for harsh industrial environments
- Precise M4 compatibility with 4.3mm ID ensuring perfect fit for metric fastener systems
- Reliable locking performance through DIN 137A compliant curved washer geometry
- Durable spring action maintained through 0.5mm thickness and 1.6mm overall height design
- Environmental compliance meeting RoHS 3 and REACH standards for global industrial applications
- Optimized load distribution with 8mm OD providing stable bearing surface for fastened components
Professional Applications & Engineering Value
This M4 spring lock washer delivers critical anti-loosening protection in vibration-prone applications where fastener security is paramount. The curved lock washer design creates continuous spring tension that compensates for thermal expansion, material relaxation, and mechanical vibrations in assemblies. Manufactured from 316 stainless steel, these metric spring washers maintain performance in corrosive environments including chemical processing, marine applications, and outdoor equipment. The DIN 137A specification ensures consistent dimensional accuracy and reliable spring characteristics for industrial washers used in machinery, automotive components, and precision equipment where vibration-induced failure is not an option.
Specification Summary & Compliance
This spring lock washer features precise metric dimensions: 4.3mm ID, 8mm OD, 0.5mm thickness, and 1.6mm overall height, engineered for M4 screw applications. Manufactured to DIN 137A standards for dimensional accuracy and performance consistency. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (including 233 SVHCs as of 01/17/2023), meeting international environmental regulations for industrial fastener applications.
