China Coil Spring Lock Washer Manufacturer, Supplier, Factory

In the world of mechanical fastening, maintaining secure connections under vibration and dynamic loads is critical. The Coil Spring Washer is a fundamental component designed to prevent loosening. For applications requiring a different wave form, the Wave Single Lock Washer offers a unique solution. When spring action is the primary need, the Wave Single Spring Washer provides excellent flexibility. However, for the ultimate combination of spring tension and locking security, the Wave Single Spring Lock Washer stands out as a superior choice, integrating multiple functionalities into a single, efficient unit.


The Coil Spring Lock Washer is engineered with precision to deliver unparalleled performance in demanding environments. Its helical coil design provides a consistent spring force that compensates for material relaxation and thermal expansion, ensuring a lasting, tight fit. This washer is ideal for use in automotive assemblies, heavy machinery, and electronic enclosures where vibration resistance is non-negotiable. Below are the detailed specifications that define the high quality and reliability of the Coil Spring Lock Washer.

Key Features of the Coil Spring Lock Washer

  • Helical coil design for superior spring action and load distribution.
  • Manufactured from high-carbon steel for maximum strength and durability.
  • Zinc plating finish provides excellent corrosion resistance.
  • Maintains tension under extreme vibration and dynamic loads.
  • Easy to install and reusable in many applications.

Technical Specifications

Parameter Specification
Material High-Carbon Steel (Grade 1050)
Finish Zinc Plated (Yellow/Blue Chromate Optional)
Hardness HRC 44-50
Operating Temperature Range -40°F to +250°F (-40°C to +121°C)
Standards ANSI B18.21.1, DIN 137, ISO 8752

Size Chart (Common Sizes)

Nominal Size (Inches) Inside Diameter (ID) (Inches) Outside Diameter (OD) (Inches) Thickness (Inches) Load Capacity (lbs)
#4 0.125 0.250 0.040 50
#8 0.190 0.375 0.050 120
1/4" 0.250 0.500 0.065 250
3/8" 0.375 0.750 0.083 450
1/2" 0.500 1.000 0.095 700

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