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Century Spring

3218CS - 1.81" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 10 coils and closed ends. This spring features an O.D. of 0.562", and an I.D. of 0.478".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3218
Ends Closed
Finish Zinc
Free Length 1.81 in
Inside Diameter 0.478 in
Material Spring Steel
Outside Diameter 0.562 in
Part Type Standard
Rate 3.9 lbs/in
SKU 3218CS
Solid Length 0.47 in
Suggested Max Deflection 1.3 in
Suggested Max Load 5.1 lbf
Total Coils 10
Wire Diameter 0.042 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3218
Ends Closed
Finish Zinc
Free Length 45.97 mm
Inside Diameter 12.14 mm
Material Spring Steel
Outside Diameter 14.27 mm
Part Type Standard
Rate 0.68 N/mm
SKU 3218CS
Solid Length 11.94 mm
Suggested Max Deflection 33.02 mm
Suggested Max Load 22.68 N
Total Coils 10
Wire Diameter 1.07 mm
The 3218CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.042" diameter spring steel, the 3218 spring design exhibits reliable strength across its 10 active coils, withstanding repeated compression cycles with a maximum load of 5.1 lbf without succumbing to fatigue.

We manufacture the 3218 design to provide a compression spring that is 1.81" long at rest and provides a consistent rate of 3.9 lbs/in along its recommended maximum of 1.3" deflection. For best results, your application should fully accommodate the inner (0.478") and outer (0.562") diameters of this spring and be designed for its closed end configuration.

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