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Century Spring

B4-69CS - 0.47" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 6.75 coils and closed ends. This spring features an O.D. of 0.3", and an I.D. of 0.258".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B4-69
Ends Closed
Finish Gold Iridite
Free Length 0.47 in
Inside Diameter 0.258 in
Material Music Wire
Outside Diameter 0.3 in
Part Type Standard
Rate 2.7 lbs/in
SKU B4-69CS
Solid Length 0.16 in
Suggested Max Deflection 0.31 in
Suggested Max Load 0.83 lbf
Total Coils 6.75
Wire Diameter 0.021 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B4-69
Ends Closed
Finish Gold Iridite
Free Length 11.94 mm
Inside Diameter 6.55 mm
Material Music Wire
Outside Diameter 7.62 mm
Part Type Standard
Rate 0.47 N/mm
SKU B4-69CS
Solid Length 4.06 mm
Suggested Max Deflection 7.87 mm
Suggested Max Load 3.69 N
Total Coils 6.75
Wire Diameter 0.53 mm
The B4-69CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.021" diameter music wire, the B4-69 spring design exhibits reliable strength across its 6.75 active coils, withstanding repeated compression cycles with a maximum load of 0.83 lbf without succumbing to fatigue.

We manufacture the B4-69 design to provide a compression spring that is 0.47" long at rest and provides a consistent rate of 2.7 lbs/in along its recommended maximum of 0.31" deflection. For best results, your application should fully accommodate the inner (0.258") and outer (0.3") diameters of this spring and be designed for its closed end configuration.

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