Spring Washers

Hex Nuts

Spring washers, also known as lock washers, are designed to prevent fasteners from loosening due to vibrations and torque. Their unique shape allows them to exert a spring force, maintaining tension and holding the fastener in place.

  • Helical or wave design that provides spring force
  • Used to maintain tension and prevent loosening of fasteners
  • Commonly used in applications with vibration or dynamic loads
  • Available in various materials like steel, stainless steel, and brass
  • Provides a locking mechanism without the need for adhesives or locking nuts
  • Ideal for automotive, machinery, and electronic applications

Spring Washers Specification Table:

SpecificationDetails
TypeSplit lock washer, Belleville washer, Wave washer, etc.
MaterialStainless steel, Carbon steel, Phosphor bronze, etc.
StandardDIN 127, ANSI B18.21.1, ISO 7089, etc.
Size RangeM2 to M100
Hardness30 to 45 HRC (Rockwell Hardness Scale)
Surface FinishZinc plated, Black oxide, Plain, etc.
ApplicationAutomotive, Aerospace, Machinery, Electronics, etc.
Temperature Range-50°C to 300°C (-58°F to 572°F)
Corrosion ResistanceHigh, Medium, Low (depends on material and finish)

Spring Washers Material Grade Table:

MaterialGradeDescription
Carbon SteelASTM A108General-purpose grade used in many applications
Stainless Steel304Corrosion-resistant, used in harsh environments
Stainless Steel316Higher corrosion resistance, especially against chlorides
Phosphor BronzeC51000Excellent spring properties and good corrosion resistance
Inconel600Nickel-chromium alloy with high temperature resistance
Beryllium CopperC17200High strength and conductivity, used in electrical applications
Alloy SteelGrade 8High-strength steel for demanding applications
BrassC36000Good machinability and corrosion resistance

Spring Washers Dimensions Chart:


Nominal Sized1d2s
Inside DiameterOutside DiameterThickness
M22.12.44.40.400.60
M2.22.32.64.80.500.70
M2.52.62.95.10.500.70
M33.13.46.20.700.90
M3.53.63.96.70.700.90
M44.14.47.60.801.00
M55.15.49.21.101.30
M66.16.511.81.501.70
M77.17.512.81.501.70
M88.18.514.81.902.10
M1010.210.718.12.052.35
M1212.212.721.12.352.65
M1414.214.724.12.853.15
M1616.217.027.43.303.70
M1818.219.029.43.303.70
M2020.221.233.63.804.20
M2222.523.535.93.804.20
M2424.525.540.04.805.20
M2727.528.543.04.805.20
M3030.531.748.25.806.20
M3636.537.758.25.806.20
M3939.540.761.25.806.20
M4242.543.768.26.757.25
M4545.546.771.26.757.25
M4849.050.575.06.757.25
M5253.054.583.07.758.25
M5657.058.587.07.758.25
M6061.062.591.07.758.25
M6465.066.595.07.758.25
M6869.070.599.97.758.25
M7273.074.5103.07.758.25
M8081.082.5111.07.758.25
M9091.092.5121.07.758.25
M100101.0102.5131.07.758.25

Spring Washer Applications:

Spring washers are essential in many mechanical and fastening applications. They are designed to provide a constant spring force that helps maintain the tension in the fastener assembly, preventing loosening and compensating for vibrations or thermal expansions. Their unique shape and properties make them valuable in applications where secure and reliable fastening is crucial.

  • Maintaining tension and preventing loosening of fasteners
  • Compensating for vibrations and dynamic loads
  • Absorbing thermal expansion and contraction
  • Providing a reliable connection in high-stress environments
  • Enhancing the longevity and stability of assemblies
  • Commonly used in automotive, aerospace, and machinery applications