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B3-21 - 1.63 Inch Spring Steel Extension Spring

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

Regular extension spring in Spring Steel. This spring features an O.D. of 0.437 Inch and an initial tension of 2 Pound.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name B3-21
Ends Machine Hook
Finish Zinc
Initial Tension 2 lb
Length 1.63 in
Material Spring Steel
Outside Diameter 0.437 in
Part Type Standard
Rate 11 lbs/in
SKU B3-21CS
Sugg Max Deflection 0.94 in
Sugg Max Load 13 lbf
Wind Direction Left
Wire Diameter 0.055 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B3-21
Ends Machine Hook
Finish Zinc
Initial Tension 0.91 kg
Length 41.4 mm
Material Spring Steel
Outside Diameter 11.1 mm
Part Type Standard
Rate 1.93 N/mm
SKU B3-21CS
Sugg Max Deflection 23.88 mm
Sugg Max Load 57.82 N
Wind Direction Left
Wire Diameter 1.4 mm

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