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Century Spring

3781 - 0.88 Inch Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from Spring Steel with 8 coils and Closed & Ground ends. This spring features an O.D. of 0.39 Inch, and an I.D. of 0.265 Inch.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3781
Ends Closed & Ground
Finish Zinc
Free Length 0.88 in
Inside Diameter 0.265 in
Material Spring Steel
Outside Diameter 0.39 in
Part Type Standard
Rate 100 lbs/in
SKU 3781CS
Solid Length 0.5 in
Suggested Max Deflection 0.21 in
Suggested Max Load 21 lbf
Total Coils 8
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3781
Ends Closed & Ground
Finish Zinc
Free Length 22.35 mm
Inside Diameter 6.73 mm
Material Spring Steel
Outside Diameter 9.91 mm
Part Type Standard
Rate 17.51 N/mm
SKU 3781CS
Solid Length 12.7 mm
Suggested Max Deflection 5.33 mm
Suggested Max Load 93.41 N
Total Coils 8
Wire Diameter 1.59 mm
The 3781 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality hard drawn and designed with precision and durability in mind, this spring is an essential component for a variety of mechanical systems where reliable force and resilience are paramount.

The 3781CS compression spring is designed with a free length of 1.38" total of 15.5 coils, and a rate of 6 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The 3781 spring design is ideal for use in industrial machinery, automotive systems, and various mechanical assemblies where reliable force application is crucial. Its robust construction and thoughtful design make it a dependable choice for engineers seeking a high-performance spring solution.

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