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Century Spring

3280CS - 3.75" Hard Drawn Compression Spring

Inventory Status
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Compression spring manufactured from hard drawn with 25.5 coils and closed & ground ends. This spring features an O.D. of 0.609", and an I.D. of 0.465".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3280
Ends Closed & Ground
Finish Gold Iridite
Free Length 3.75 in
Inside Diameter 0.465 in
Material Spring Steel
Outside Diameter 0.609 in
Part Type Standard
Rate 11 lbs/in
SKU 3280CS
Solid Length 1.84 in
Suggested Max Deflection 1.9 in
Suggested Max Load 20 lbf
Total Coils 25.5
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3280
Ends Closed & Ground
Finish Gold Iridite
Free Length 95.25 mm
Inside Diameter 11.81 mm
Material Spring Steel
Outside Diameter 15.47 mm
Part Type Standard
Rate 1.93 N/mm
SKU 3280CS
Solid Length 46.74 mm
Suggested Max Deflection 48.26 mm
Suggested Max Load 88.96 N
Total Coils 25.5
Wire Diameter 1.83 mm
The 3280CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.072" diameter hard drawn, the 3280 spring design exhibits reliable strength across its 25.5 active coils, withstanding repeated compression cycles with a maximum load of 20 lbf without succumbing to fatigue.

We manufacture the 3280 design to provide a compression spring that is 3.75" long at rest and provides a consistent rate of 11 lbs/in along its recommended maximum of 1.9" deflection. For best results, your application should fully accommodate the inner (0.465") and outer (0.609") diameters of this spring and be designed for its closed & ground end configuration.

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