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3940 - 2.69 Inch, 21 Inch Pounds Spring Steel Compression Spring

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

Compression spring manufactured from Spring Steel with 22.3 coils and Closed & Ground ends. This spring features an O.D. of 0.36 Inch, an I.D. of 0.252 Inch, and a spring rate of 21 Inch Pounds.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3940
Ends Closed & Ground
Finish Zinc
Free Length 2.69 in
Inside Diameter 0.252 in
Material Spring Steel
Outside Diameter 0.36 in
Part Type Standard
Rate 21 lbs/in
SKU 3940CS
Solid Length 1.2 in
Suggested Max Deflection 0.72 in
Suggested Max Load 15 lbf
Total Coils 22.3
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3940
Ends Closed & Ground
Finish Zinc
Free Length 68.33 mm
Inside Diameter 6.4 mm
Material Spring Steel
Outside Diameter 9.14 mm
Part Type Standard
Rate 3.68 N/mm
SKU 3940CS
Solid Length 30.48 mm
Suggested Max Deflection 18.29 mm
Suggested Max Load 66.72 N
Total Coils 22.3
Wire Diameter 1.37 mm

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