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B9-44CS - 1.19" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 12.5 coils and closed & ground ends. This spring features an O.D. of 0.188", and an I.D. of 0.138".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B9-44
Ends Closed & Ground
Finish Zinc
Free Length 1.19 in
Inside Diameter 0.138 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 12 lbs/in
SKU B9-44CS
Solid Length 0.31 in
Suggested Max Deflection 0.37 in
Suggested Max Load 4.6 lbf
Total Coils 12.5
Wire Diameter 0.025 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B9-44
Ends Closed & Ground
Finish Zinc
Free Length 30.23 mm
Inside Diameter 3.51 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 2.1 N/mm
SKU B9-44CS
Solid Length 7.87 mm
Suggested Max Deflection 9.4 mm
Suggested Max Load 20.46 N
Total Coils 12.5
Wire Diameter 0.64 mm
The B9-44CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.025" diameter music wire, the B9-44 spring design exhibits reliable strength across its 12.5 active coils, withstanding repeated compression cycles with a maximum load of 4.6 lbf without succumbing to fatigue.

We manufacture the B9-44 design to provide a compression spring that is 1.19" long at rest and provides a consistent rate of 12 lbs/in along its recommended maximum of 0.37" deflection. For best results, your application should fully accommodate the inner (0.138") and outer (0.188") diameters of this spring and be designed for its closed & ground end configuration.