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Century Spring

2728CS - 3.5" Spring Steel Compression Spring

Inventory Status
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Compression spring manufactured from spring steel with 9 coils and closed & ground ends. This spring features an O.D. of 1", and an I.D. of 0.676".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 2728
Ends Closed & Ground
Finish Zinc
Free Length 3.5 in
Inside Diameter 0.676 in
Material Spring Steel
Outside Diameter 1 in
Part Type Standard
Rate 240 lbs/in
SKU 2728CS
Solid Length 1.46 in
Suggested Max Deflection 0.51 in
Suggested Max Load 123 lbf
Total Coils 9
Wire Diameter 0.162 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 2728
Ends Closed & Ground
Finish Zinc
Free Length 88.9 mm
Inside Diameter 17.17 mm
Material Spring Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 42.02 N/mm
SKU 2728CS
Solid Length 37.08 mm
Suggested Max Deflection 12.95 mm
Suggested Max Load 547.1 N
Total Coils 9
Wire Diameter 4.11 mm
The 2728CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.162" diameter spring steel, the 2728 spring design exhibits reliable strength across its 9 active coils, withstanding repeated compression cycles with a maximum load of 123 lbf without succumbing to fatigue.

We manufacture the 2728 design to provide a compression spring that is 3.5" long at rest and provides a consistent rate of 240 lbs/in along its recommended maximum of 0.51" deflection. For best results, your application should fully accommodate the inner (0.676") and outer (1") diameters of this spring and be designed for its closed & ground end configuration.

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