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Century Spring

72172CS - 0.75" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 3.75 coils and closed & ground ends. This spring features an O.D. of 0.85", and an I.D. of 0.714".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72172
Ends Closed & Ground
Finish None
Free Length 0.75 in
Inside Diameter 0.714 in
Material Music Wire
Outside Diameter 0.85 in
Part Type Standard
Rate 36 lbs/in
SKU 72172CS
Solid Length 0.26 in
Suggested Max Deflection 0.5 in
Suggested Max Load 18 lbf
Total Coils 3.75
Wire Diameter 0.068 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72172
Ends Closed & Ground
Finish None
Free Length 19.05 mm
Inside Diameter 18.14 mm
Material Music Wire
Outside Diameter 21.59 mm
Part Type Standard
Rate 6.3 N/mm
SKU 72172CS
Solid Length 6.6 mm
Suggested Max Deflection 12.7 mm
Suggested Max Load 80.06 N
Total Coils 3.75
Wire Diameter 1.73 mm
The 72172CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.068" diameter music wire, the 72172 spring design exhibits reliable strength across its 3.75 active coils, withstanding repeated compression cycles with a maximum load of 18 lbf without succumbing to fatigue.

We manufacture the 72172 design to provide a compression spring that is 0.75" long at rest and provides a consistent rate of 36 lbs/in along its recommended maximum of 0.5" deflection. For best results, your application should fully accommodate the inner (0.714") and outer (0.85") diameters of this spring and be designed for its closed & ground end configuration.

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