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51CS - 2.75" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 16.3 coils and closed & ground ends. This spring features an O.D. of 0.625", and an I.D. of 0.385".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 51
Ends Closed & Ground
Finish Zinc
Free Length 2.75 in
Inside Diameter 0.385 in
Material Spring Steel
Outside Diameter 0.625 in
Part Type Standard
Rate 162 lbs/in
SKU 51CS
Solid Length 1.95 in
Suggested Max Deflection 0.51 in
Suggested Max Load 82 lbf
Total Coils 16.3
Wire Diameter 0.12 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 51
Ends Closed & Ground
Finish Zinc
Free Length 69.85 mm
Inside Diameter 9.78 mm
Material Spring Steel
Outside Diameter 15.88 mm
Part Type Standard
Rate 28.37 N/mm
SKU 51CS
Solid Length 49.53 mm
Suggested Max Deflection 12.95 mm
Suggested Max Load 364.74 N
Total Coils 16.3
Wire Diameter 3.05 mm
The 51CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.12" diameter spring steel, the 51 spring design exhibits reliable strength across its 16.3 active coils, withstanding repeated compression cycles with a maximum load of 82 lbf without succumbing to fatigue.

We manufacture the 51 design to provide a compression spring that is 2.75" long at rest and provides a consistent rate of 162 lbs/in along its recommended maximum of 0.51" deflection. For best results, your application should fully accommodate the inner (0.385") and outer (0.625") diameters of this spring and be designed for its closed & ground end configuration.