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Century Spring

1645CS - 2.63" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 17.5 coils and closed & ground ends. This spring features an O.D. of 0.5", and an I.D. of 0.406".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 1645
Ends Closed & Ground
Finish Zinc
Free Length 2.63 in
Inside Diameter 0.406 in
Material Spring Steel
Outside Diameter 0.5 in
Part Type Standard
Rate 4.9 lbs/in
SKU 1645CS
Solid Length 0.82 in
Suggested Max Deflection 1.6 in
Suggested Max Load 8 lbf
Total Coils 17.5
Wire Diameter 0.047 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 1645
Ends Closed & Ground
Finish Zinc
Free Length 66.8 mm
Inside Diameter 10.31 mm
Material Spring Steel
Outside Diameter 12.7 mm
Part Type Standard
Rate 0.86 N/mm
SKU 1645CS
Solid Length 20.83 mm
Suggested Max Deflection 40.64 mm
Suggested Max Load 35.58 N
Total Coils 17.5
Wire Diameter 1.19 mm
The 1645CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.047" diameter spring steel, the 1645 spring design exhibits reliable strength across its 17.5 active coils, withstanding repeated compression cycles with a maximum load of 8 lbf without succumbing to fatigue.

We manufacture the 1645 design to provide a compression spring that is 2.63" long at rest and provides a consistent rate of 4.9 lbs/in along its recommended maximum of 1.6" deflection. For best results, your application should fully accommodate the inner (0.406") and outer (0.5") diameters of this spring and be designed for its closed & ground end configuration.

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