China Split Lock Spring Washer Manufacturer, Supplier, Factory

When it comes to maintaining reliable bolted connections under extreme conditions, the Split Lock Spring Washer stands out as a crucial component in various industrial applications. Designed to prevent loosening due to vibration, thermal expansion, or dynamic loads, this washer provides consistent spring tension and locking security. For even more demanding environments, you might also consider a Heavy Duty Spring Washer for enhanced durability, or explore the unique load distribution offered by Wave Saddle Spring Washers. Each product is engineered to meet specific performance needs, ensuring your assemblies remain secure and operational.


The unique design of the Split Lock Spring Washer features a single cut and helical twist, which creates a continuous spring action. This action exerts a force against the nut or bolt head and the bearing surface, effectively resisting rotational loosening. Unlike flat washers, the Split Lock Spring Washer maintains tension even after initial settling, compensating for material wear and relaxation over time. It is an ideal choice for applications in automotive, aerospace, machinery, and construction where vibration is a constant challenge.

Key Specifications of the Split Lock Spring Washer

  • Material: Typically manufactured from high-carbon steel, stainless steel (Grade 304 and 316), or other alloys for corrosion resistance.
  • Function: Provides spring preload and locking action to prevent fastener loosening.
  • Operating Temperature Range: Varies by material, generally from -60°C to +300°C (-76°F to +572°F).
  • Standards: Compliant with DIN 127 B, ISO 10644, and other international standards.
  • Surface Finishes: Available in plain, zinc-plated, galvanized, or other protective coatings.

Detailed Product Parameters

Nominal Size (mm) Outer Diameter (mm) Inner Diameter (mm) Thickness (mm) Approx. Load Deflection (N/mm)
M4 8.0 4.2 1.0 25
M6 11.5 6.2 1.6 45
M8 15.0 8.2 2.0 70
M10 18.0 10.2 2.5 110
M12 22.0 12.2 3.0 150

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