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Century Spring

S-639CS - 4 Inch 302/304 Stainless Steel Extension Spring

Inventory Status
Estimated Lead Time

Regular extension spring in 302/304 Stainless Steel. This spring features an O.D. of 1 Inch and an initial tension of 9.1 Pound.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-639
Ends Machine Hook
Finish None
Initial Tension 9.1 lb
Length 4 in
Material 302/304 Stainless Steel
Outside Diameter 1 in
Part Type Standard
Rate 15 lbs/in
SKU S-639CS
Sugg Max Deflection 1.97 in
Sugg Max Load 33.7 lbf
Wind Direction Left
Wire Diameter 0.112 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-639
Ends Machine Hook
Finish None
Initial Tension 4.13 kg
Length 101.6 mm
Material 302/304 Stainless Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 2.63 N/mm
SKU S-639CS
Sugg Max Deflection 50.04 mm
Sugg Max Load 149.9 N
Wind Direction Left
Wire Diameter 2.84 mm

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