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Century Spring

1639CS - 7" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 14 coils and closed ends. This spring features an O.D. of 1.703", and an I.D. of 1.407".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 1639
Ends Closed
Finish Zinc
Free Length 7 in
Inside Diameter 1.407 in
Material Spring Steel
Outside Diameter 1.703 in
Part Type Standard
Rate 15 lbs/in
SKU 1639CS
Solid Length 2.22 in
Suggested Max Deflection 3.9 in
Suggested Max Load 59 lbf
Total Coils 14
Wire Diameter 0.148 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 1639
Ends Closed
Finish Zinc
Free Length 177.8 mm
Inside Diameter 35.74 mm
Material Spring Steel
Outside Diameter 43.26 mm
Part Type Standard
Rate 2.63 N/mm
SKU 1639CS
Solid Length 56.39 mm
Suggested Max Deflection 99.06 mm
Suggested Max Load 262.43 N
Total Coils 14
Wire Diameter 3.76 mm
The 1639CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.148" diameter spring steel, the 1639 spring design exhibits reliable strength across its 14 active coils, withstanding repeated compression cycles with a maximum load of 59 lbf without succumbing to fatigue.

We manufacture the 1639 design to provide a compression spring that is 7" long at rest and provides a consistent rate of 15 lbs/in along its recommended maximum of 3.9" deflection. For best results, your application should fully accommodate the inner (1.407") and outer (1.703") diameters of this spring and be designed for its closed end configuration.

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