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Century Spring

QQ-45CS - 1.38" Hard Drawn Compression Spring

Inventory Status
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Compression spring manufactured from hard drawn with 9.5 coils and closed ends. This spring features an O.D. of 0.546", and an I.D. of 0.402".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name QQ-45
Ends Closed
Finish Zinc
Free Length 1.38 in
Inside Diameter 0.402 in
Material Spring Steel
Outside Diameter 0.546 in
Part Type Standard
Rate 48 lbs/in
SKU QQ-45CS
Solid Length 0.76 in
Suggested Max Deflection 0.47 in
Suggested Max Load 23 lbf
Total Coils 9.5
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name QQ-45
Ends Closed
Finish Zinc
Free Length 35.05 mm
Inside Diameter 10.21 mm
Material Spring Steel
Outside Diameter 13.87 mm
Part Type Standard
Rate 8.4 N/mm
SKU QQ-45CS
Solid Length 19.3 mm
Suggested Max Deflection 11.94 mm
Suggested Max Load 102.3 N
Total Coils 9.5
Wire Diameter 1.83 mm
The QQ-45CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.072" diameter hard drawn, the QQ-45 spring design exhibits reliable strength across its 9.5 active coils, withstanding repeated compression cycles with a maximum load of 23 lbf without succumbing to fatigue.

We manufacture the QQ-45 design to provide a compression spring that is 1.38" long at rest and provides a consistent rate of 48 lbs/in along its recommended maximum of 0.47" deflection. For best results, your application should fully accommodate the inner (0.402") and outer (0.546") diameters of this spring and be designed for its closed end configuration.

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