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Century Spring

4109CS - 3.25" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 27.5 coils and closed ends. This spring features an O.D. of 0.312", and an I.D. of 0.22".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4109
Ends Closed
Finish None
Free Length 3.25 in
Inside Diameter 0.22 in
Material Spring Steel
Outside Diameter 0.312 in
Part Type Standard
Rate 13 lbs/in
SKU 4109CS
Solid Length 1.31 in
Suggested Max Deflection 0.87 in
Suggested Max Load 12 lbf
Total Coils 27.5
Wire Diameter 0.046 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4109
Ends Closed
Finish None
Free Length 82.55 mm
Inside Diameter 5.59 mm
Material Spring Steel
Outside Diameter 7.92 mm
Part Type Standard
Rate 2.28 N/mm
SKU 4109CS
Solid Length 33.27 mm
Suggested Max Deflection 22.1 mm
Suggested Max Load 53.38 N
Total Coils 27.5
Wire Diameter 1.17 mm
The 4109CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.046" diameter spring steel, the 4109 spring design exhibits reliable strength across its 27.5 active coils, withstanding repeated compression cycles with a maximum load of 12 lbf without succumbing to fatigue.

We manufacture the 4109 design to provide a compression spring that is 3.25" long at rest and provides a consistent rate of 13 lbs/in along its recommended maximum of 0.87" deflection. For best results, your application should fully accommodate the inner (0.22") and outer (0.312") diameters of this spring and be designed for its closed end configuration.

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