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NN-3 - 0.5 Inch, 42 Inch Pounds Music Wire Compression Spring

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

Compression spring manufactured from Music Wire with 9 coils and Closed ends. This spring features an O.D. of 0.188 Inch, an I.D. of 0.128 Inch, and a spring rate of 42 Inch Pounds.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name NN-3
Ends Closed
Finish None
Free Length 0.5 in
Inside Diameter 0.128 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 42 lbs/in
SKU NN-3CS
Solid Length 0.3 in
Suggested Max Deflection 0.18 in
Suggested Max Load 7.7 lbf
Total Coils 9
Wire Diameter 0.03 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name NN-3
Ends Closed
Finish None
Free Length 12.7 mm
Inside Diameter 3.25 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 7.35 N/mm
SKU NN-3CS
Solid Length 7.62 mm
Suggested Max Deflection 4.57 mm
Suggested Max Load 34.25 N
Total Coils 9
Wire Diameter 0.76 mm