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643CS - 6.5 Inch High Carbon Steel Extension Spring

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Regular extension spring in High Carbon Steel. This spring features an O.D. of 0.625 Inch and an initial tension of 1.2 Pound.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 643
Ends Machine Hook
Finish Zinc
Initial Tension 1.2 lb
Length 6.5 in
Material High Carbon Steel
Outside Diameter 0.625 in
Part Type Standard
Rate 0.65 lbs/in
SKU 643CS
Sugg Max Deflection 11 in
Sugg Max Load 8.3 lbf
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 643
Ends Machine Hook
Finish Zinc
Initial Tension 0.54 kg
Length 165.1 mm
Material High Carbon Steel
Outside Diameter 15.88 mm
Part Type Standard
Rate 0.11 N/mm
SKU 643CS
Sugg Max Deflection 279.4 mm
Sugg Max Load 36.92 N
Wire Diameter 1.37 mm

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