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Extension Springs

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Extension springs are helical coil springs designed to absorb energy while resisting pulling forces. The further they are stretched, the more force is generate, making them ideal for bringing two components together.

Common applications include Throttle Turn Mechanisms in Automotive, Trampolines, Fitness Equipment and Vibration Dampening Systems.

It is available in both Music Wire material, which is ideal for temperatures between -30 C and +120 C and for use in dry environments, and stainless Steel material, which is ideal for temperatures between -200 C and +250 C and for use in both dry and humid or wet environments. Key Factors to consider when choosing a spring for an application include Spring Material and the Working Environment, Spring Dimensions in both extended and non-extended states. Material: Stainless Steel, Carbon Steel Series Code:

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198 results
Product SKUs information
Essentra Part Number Price range Availability Loaded Length Spring Rate Initial Tension Overall Length Material Load at Load Length Outside Diameter View
£ 1.7292 - £ 1.8851 Request the lead time here
7.56 N
69.9 mm
Carbon Steel
83.63 N
£ 1.8284 - £ 1.9844 Request the lead time here
7.56 N
114.3 mm
Carbon Steel
83.63 N
£ 2.4663 - £ 2.6789 Request the lead time here
12.32 N
63.5 mm
Carbon Steel
137.09 N
£ 2.7923 - £ 3.0333 Request the lead time here
12.32 N
101.6 mm
Carbon Steel
137.09 N
£ 2.4946 - £ 2.7214 Request the lead time here
27.89 N
57.2 mm
Carbon Steel
309.98 N
£ 1.8851 - £ 2.0411 Request the lead time here
2.22 N
88.9 mm
Carbon Steel
23.58 N
£ 1.5024 - £ 1.6442 Request the lead time here
3.65 N
25.4 mm
Carbon Steel
40.30 N
£ 1.5024 - £ 1.6442 Request the lead time here
3.65 N
38.1 mm
Carbon Steel
40.30 N
£ 1.5024 - £ 1.6442 Request the lead time here
3.65 N
63.5 mm
Carbon Steel
40.30 N
£ 1.5024 - £ 1.6442 Request the lead time here
6.23 N
28.5 mm
Carbon Steel
70.28 N
£ 1.5024 - £ 1.6442 Request the lead time here
6.23 N
44.5 mm
Carbon Steel
70.28 N
£ 1.5024 - £ 1.6442 Request the lead time here
6.23 N
76.2 mm
Carbon Steel
70.28 N
£ 1.5166 - £ 1.6584 Request the lead time here
1.78 N
44.5 mm
Carbon Steel
19.57 N
£ 1.5166 - £ 1.6584 Request the lead time here
1.78 N
69.9 mm
Carbon Steel
19.57 N
£ 1.5024 - £ 1.6442 Request the lead time here
3.65 N
50.8 mm
Carbon Steel
40.30 N
£ 1.5024 - £ 1.6442 Request the lead time here
3.65 N
76.2 mm
Carbon Steel
40.30 N
£ 1.5024 - £ 1.6442 Request the lead time here
6.23 N
34.8 mm
Carbon Steel
70.28 N
£ 1.5024 - £ 1.6442 Request the lead time here
6.23 N
57.2 mm
Carbon Steel
70.28 N
£ 1.4316 - £ 1.5591 Request the lead time here
0.85 N
57.2 mm
Carbon Steel
9.21 N
£ 1.4316 - £ 1.5591 Request the lead time here
2.22 N
22.4 mm
Carbon Steel
23.58 N
  • of 10
Extension Spring 12.7 mm 1.61 Nmm Carbon Steel

10439517

Price Range
£ 1.8851 - £ 1.7292

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    7.56 N
  • Load at Load Length
    83.63 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    69.9 mm
  • Material
    Carbon Steel
Extension Spring 12.7 mm 0.84 Nmm Carbon Steel

10439555

Price Range
£ 1.9844 - £ 1.8284

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    7.56 N
  • Load at Load Length
    83.63 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    114.3 mm
  • Material
    Carbon Steel
Extension Spring 19.1 mm 3.33 Nmm Carbon Steel

10414712

Price Range
£ 2.6789 - £ 2.4663

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    12.32 N
  • Load at Load Length
    137.09 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    63.5 mm
  • Material
    Carbon Steel
Extension Spring 19.1 mm 1.44 Nmm Carbon Steel

10636688

Price Range
£ 3.0333 - £ 2.7923

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    12.32 N
  • Load at Load Length
    137.09 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    101.6 mm
  • Material
    Carbon Steel
Extension Spring 19.1 mm 20.22 Nmm Carbon Steel

10439609

Price Range
£ 2.7214 - £ 2.4946

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    27.89 N
  • Load at Load Length
    309.98 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    57.2 mm
  • Material
    Carbon Steel
Extension Spring 6.1 mm 0.26 Nmm Carbon Steel

10439241

Price Range
£ 2.0411 - £ 1.8851

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    2.22 N
  • Load at Load Length
    23.58 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    88.9 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 3.85 Nmm Carbon Steel

10439289

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    3.65 N
  • Load at Load Length
    40.30 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    25.4 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 1.21 Nmm Carbon Steel

10424148

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    3.65 N
  • Load at Load Length
    40.30 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    38.1 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 0.51 Nmm Carbon Steel

10439319

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    3.65 N
  • Load at Load Length
    40.30 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    63.5 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 6.79 Nmm Carbon Steel

10424797

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    6.23 N
  • Load at Load Length
    70.28 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    28.5 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 2.57 Nmm Carbon Steel

10422403

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    6.23 N
  • Load at Load Length
    70.28 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    44.5 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 1.16 Nmm Carbon Steel

10234532

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    6.23 N
  • Load at Load Length
    70.28 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    76.2 mm
  • Material
    Carbon Steel
Extension Spring 12.7 mm 0.21 Nmm Carbon Steel

10439401

Price Range
£ 1.6584 - £ 1.5166

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    1.78 N
  • Load at Load Length
    19.57 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    44.5 mm
  • Material
    Carbon Steel
Extension Spring 12.7 mm 0.11 Nmm Carbon Steel

10439432

Price Range
£ 1.6584 - £ 1.5166

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    1.78 N
  • Load at Load Length
    19.57 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    69.9 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 0.72 Nmm Carbon Steel

10419663

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    3.65 N
  • Load at Load Length
    40.30 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    50.8 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 0.40 Nmm Carbon Steel

10234518

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    3.65 N
  • Load at Load Length
    40.30 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    76.2 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 4.12 Nmm Carbon Steel

10234525

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    6.23 N
  • Load at Load Length
    70.28 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    34.8 mm
  • Material
    Carbon Steel
Extension Spring 10.6 mm 1.72 Nmm Carbon Steel

10439357

Price Range
£ 1.6442 - £ 1.5024

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    6.23 N
  • Load at Load Length
    70.28 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    57.2 mm
  • Material
    Carbon Steel
Extension Spring 6.1 mm 0.07 Nmm Carbon Steel

10439135

Price Range
£ 1.5591 - £ 1.4316

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    0.85 N
  • Load at Load Length
    9.21 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    57.2 mm
  • Material
    Carbon Steel
Extension Spring 6.1 mm 1.73 Nmm Carbon Steel

10439173

Price Range
£ 1.5591 - £ 1.4316

Stock Levels
Request the lead time here
Attributes
  • Initial Tension
    2.22 N
  • Load at Load Length
    23.58 N
  • Maximum Application Temperature
    121 °C
  • Overall Length
    22.4 mm
  • Material
    Carbon Steel