F-81

F-81

Regular extension spring in Hand Drawn Steel. This spring features an O.D. of 0.25 Inch, an initial tension of 0.9 Pound, and a spring rate of 7.5 Pound Force per Inch.

Current variant: F-81CS. Navigate to a different variant:
Diagram of extension spring with measurements
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name F-81
Ends Machine Hook
Finish Gold Iridite
Initial Tension 0.9 lb
Length 1 in
Material Hand Drawn Steel
Outside Diameter 0.25 in
Part Type Standard
Rate 7.5 lbf/in
Sugg Max Deflection 0.55 in
Sugg Max Load 5 lbf
Wind Direction Left
Wire Diameter 0.032 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name F-81
Ends Machine Hook
Finish Gold Iridite
Initial Tension 0.41 kg
Length 25.4 mm
Material Hand Drawn Steel
Outside Diameter 6.35 mm
Part Type Standard
Rate 1.31 N/mm
Sugg Max Deflection 13.97 mm
Sugg Max Load 22.24 N
Wind Direction Left
Wire Diameter 0.81 mm

Inventory Status

In-stock

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Quantity Price
1 - 49 $2.32
50 - 149 $2.21
150 - 299 $2.09
300 - 499 $1.98
500 - 749 $1.74
750 - 999 $1.51
1000+ Call for price