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Century Spring

557CS - 1.38 Inch Phosphor Bronze Extension Spring

Inventory Status
Estimated Lead Time

Regular extension spring in Phosphor Bronze. This spring features an O.D. of 0.328 Inch and an initial tension of 6 Pound.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 557
Ends Machine Hook
Finish None
Initial Tension 6 lb
Length 1.38 in
Material Phosphor Bronze
Outside Diameter 0.328 in
Part Type Standard
Rate 47 lbs/in
SKU 557CS
Sugg Max Deflection 0.43 in
Sugg Max Load 26 lbf
Wind Direction Left
Wire Diameter 0.064 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 557
Ends Machine Hook
Finish None
Initial Tension 2.72 kg
Length 35.05 mm
Material Phosphor Bronze
Outside Diameter 8.33 mm
Part Type Standard
Rate 8.23 N/mm
SKU 557CS
Sugg Max Deflection 10.92 mm
Sugg Max Load 115.65 N
Wind Direction Left
Wire Diameter 1.63 mm

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