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Century Spring

B8-51CS - 1.38" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 7 coils and closed & ground ends. This spring features an O.D. of 0.796", and an I.D. of 0.456".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B8-51
Ends Closed & Ground
Finish Zinc
Free Length 1.38 in
Inside Diameter 0.456 in
Material Spring Steel
Outside Diameter 0.796 in
Part Type Standard
Rate 979 lbs/in
SKU B8-51CS
Solid Length 1.19 in
Suggested Max Deflection 0.17 in
Suggested Max Load 170 lbf
Total Coils 7
Wire Diameter 0.17 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B8-51
Ends Closed & Ground
Finish Zinc
Free Length 35.05 mm
Inside Diameter 11.58 mm
Material Spring Steel
Outside Diameter 20.22 mm
Part Type Standard
Rate 171.42 N/mm
SKU B8-51CS
Solid Length 30.23 mm
Suggested Max Deflection 4.32 mm
Suggested Max Load 756.16 N
Total Coils 7
Wire Diameter 4.32 mm
The B8-51CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.17" diameter spring steel, the B8-51 spring design exhibits reliable strength across its 7 active coils, withstanding repeated compression cycles with a maximum load of 170 lbf without succumbing to fatigue.

We manufacture the B8-51 design to provide a compression spring that is 1.38" long at rest and provides a consistent rate of 979 lbs/in along its recommended maximum of 0.17" deflection. For best results, your application should fully accommodate the inner (0.456") and outer (0.796") diameters of this spring and be designed for its closed & ground end configuration.

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