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Century Spring

72909CS - 1.5" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 4.38 coils and closed & ground ends. This spring features an O.D. of 1.687", and an I.D. of 1.303".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72909
Ends Closed & Ground
Finish None
Free Length 1.5 in
Inside Diameter 1.303 in
Material Music Wire
Outside Diameter 1.687 in
Part Type Standard
Rate 247 lbs/in
SKU 72909CS
Solid Length 0.84 in
Suggested Max Deflection 0.66 in
Suggested Max Load 163 lbf
Total Coils 4.38
Wire Diameter 0.192 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72909
Ends Closed & Ground
Finish None
Free Length 38.1 mm
Inside Diameter 33.1 mm
Material Music Wire
Outside Diameter 42.85 mm
Part Type Standard
Rate 43.25 N/mm
SKU 72909CS
Solid Length 21.34 mm
Suggested Max Deflection 16.76 mm
Suggested Max Load 725.02 N
Total Coils 4.38
Wire Diameter 4.88 mm
The 72909CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.192" diameter music wire, the 72909 spring design exhibits reliable strength across its 4.38 active coils, withstanding repeated compression cycles with a maximum load of 163 lbf without succumbing to fatigue.

We manufacture the 72909 design to provide a compression spring that is 1.5" long at rest and provides a consistent rate of 247 lbs/in along its recommended maximum of 0.66" deflection. For best results, your application should fully accommodate the inner (1.303") and outer (1.687") diameters of this spring and be designed for its closed & ground end configuration.

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