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Century Spring

72737CS - 4" Music Wire Compression Spring

Inventory Status
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Compression spring manufactured from music wire with 12.6 coils and closed & ground ends. This spring features an O.D. of 1.225", and an I.D. of 0.901".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72737
Ends Closed & Ground
Finish None
Free Length 4 in
Inside Diameter 0.901 in
Material Music Wire
Outside Diameter 1.225 in
Part Type Standard
Rate 78 lbs/in
SKU 72737CS
Solid Length 2.05 in
Suggested Max Deflection 1.8 in
Suggested Max Load 143 lbf
Total Coils 12.6
Wire Diameter 0.162 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72737
Ends Closed & Ground
Finish None
Free Length 101.6 mm
Inside Diameter 22.89 mm
Material Music Wire
Outside Diameter 31.12 mm
Part Type Standard
Rate 13.66 N/mm
SKU 72737CS
Solid Length 52.07 mm
Suggested Max Deflection 45.72 mm
Suggested Max Load 636.06 N
Total Coils 12.6
Wire Diameter 4.11 mm
The 72737CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.162" diameter music wire, the 72737 spring design exhibits reliable strength across its 12.6 active coils, withstanding repeated compression cycles with a maximum load of 143 lbf without succumbing to fatigue.

We manufacture the 72737 design to provide a compression spring that is 4" long at rest and provides a consistent rate of 78 lbs/in along its recommended maximum of 1.8" deflection. For best results, your application should fully accommodate the inner (0.901") and outer (1.225") diameters of this spring and be designed for its closed & ground end configuration.

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