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73520CS - 8" Oil Tempered Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from oil tempered with 8.31 coils and closed & ground ends. This spring features an O.D. of 4.156", and an I.D. of 3.094".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 73520
Ends Closed & Ground
Finish None
Free Length 8 in
Inside Diameter 3.094 in
Material Oil Tempered
Outside Diameter 4.156 in
Part Type Standard
Rate 380 lbs/in
SKU 73520CS
Solid Length 4.41 in
Suggested Max Deflection 2.4 in
Suggested Max Load 928 lbf
Total Coils 8.31
Wire Diameter 0.531 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 73520
Ends Closed & Ground
Finish None
Free Length 203.2 mm
Inside Diameter 78.59 mm
Material Oil Tempered
Outside Diameter 105.56 mm
Part Type Standard
Rate 66.54 N/mm
SKU 73520CS
Solid Length 112.01 mm
Suggested Max Deflection 60.96 mm
Suggested Max Load 4127.74 N
Total Coils 8.31
Wire Diameter 13.49 mm
The 73520CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.531" diameter oil tempered, the 73520 spring design exhibits reliable strength across its 8.31 active coils, withstanding repeated compression cycles with a maximum load of 928 lbf without succumbing to fatigue.

We manufacture the 73520 design to provide a compression spring that is 8" long at rest and provides a consistent rate of 380 lbs/in along its recommended maximum of 2.4" deflection. For best results, your application should fully accommodate the inner (3.094") and outer (4.156") diameters of this spring and be designed for its closed & ground end configuration.