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I-18 - 1.72 Inch, 17 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 18.5 coils and Closed & Ground ends. This spring features an O.D. of 0.406 Inch, an I.D. of 0.298 Inch, and a spring rate of 17 Inch Pounds.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name I-18
Ends Closed & Ground
Finish Zinc
Free Length 1.72 in
Inside Diameter 0.298 in
Material Spring Steel
Outside Diameter 0.406 in
Part Type Standard
Rate 17 lbs/in
SKU I-18CS
Solid Length 1 in
Suggested Max Deflection 0.72 in
Suggested Max Load 12 lbf
Total Coils 18.5
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name I-18
Ends Closed & Ground
Finish Zinc
Free Length 43.69 mm
Inside Diameter 7.57 mm
Material Spring Steel
Outside Diameter 10.31 mm
Part Type Standard
Rate 2.98 N/mm
SKU I-18CS
Solid Length 25.4 mm
Suggested Max Deflection 18.29 mm
Suggested Max Load 53.38 N
Total Coils 18.5
Wire Diameter 1.37 mm

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