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4135CS - 2.5" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 4 coils and closed & ground ends. This spring features an O.D. of 2.687", and an I.D. of 2.437".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 4135
Ends Closed & Ground
Finish Zinc
Free Length 2.5 in
Inside Diameter 2.437 in
Material Spring Steel
Outside Diameter 2.687 in
Part Type Standard
Rate 12 lbs/in
SKU 4135CS
Solid Length 0.51 in
Suggested Max Deflection 2 in
Suggested Max Load 23 lbf
Total Coils 4
Wire Diameter 0.125 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 4135
Ends Closed & Ground
Finish Zinc
Free Length 63.5 mm
Inside Diameter 61.9 mm
Material Spring Steel
Outside Diameter 68.25 mm
Part Type Standard
Rate 2.1 N/mm
SKU 4135CS
Solid Length 12.95 mm
Suggested Max Deflection 50.8 mm
Suggested Max Load 102.3 N
Total Coils 4
Wire Diameter 3.18 mm
The 4135CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.125" diameter spring steel, the 4135 spring design exhibits reliable strength across its 4 active coils, withstanding repeated compression cycles with a maximum load of 23 lbf without succumbing to fatigue.

We manufacture the 4135 design to provide a compression spring that is 2.5" long at rest and provides a consistent rate of 12 lbs/in along its recommended maximum of 2" deflection. For best results, your application should fully accommodate the inner (2.437") and outer (2.687") diameters of this spring and be designed for its closed & ground end configuration.