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Century Spring

377CS - 8.5" Hard Drawn Compression Spring

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Compression spring manufactured from hard drawn with 22 coils and closed ends. This spring features an O.D. of 0.875", and an I.D. of 0.731".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 377
Ends Closed
Finish Zinc
Free Length 8.5 in
Inside Diameter 0.731 in
Material Spring Steel
Outside Diameter 0.875 in
Part Type Standard
Rate 3.7 lbs/in
SKU 377CS
Solid Length 1.66 in
Suggested Max Deflection 3.9 in
Suggested Max Load 15 lbf
Total Coils 22
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 377
Ends Closed
Finish Zinc
Free Length 215.9 mm
Inside Diameter 18.57 mm
Material Spring Steel
Outside Diameter 22.23 mm
Part Type Standard
Rate 0.65 N/mm
SKU 377CS
Solid Length 42.16 mm
Suggested Max Deflection 99.06 mm
Suggested Max Load 66.72 N
Total Coils 22
Wire Diameter 1.83 mm
The 377CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.072" diameter hard drawn, the 377 spring design exhibits reliable strength across its 22 active coils, withstanding repeated compression cycles with a maximum load of 15 lbf without succumbing to fatigue.

We manufacture the 377 design to provide a compression spring that is 8.5" long at rest and provides a consistent rate of 3.7 lbs/in along its recommended maximum of 3.9" deflection. For best results, your application should fully accommodate the inner (0.731") and outer (0.875") diameters of this spring and be designed for its closed end configuration.

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