Extension Springs

An extension spring or tension spring is a length of tightly coiled metal, usually steel with hooks or loops at either end. Extension springs absorb and store energy. You can find out more in our extension springs guide.

What does it do?

An extension spring is a component that creates a resis...

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RS PRO Steel Extension Spring, 59 mm x 8.5 mm OD
RS PRO Steel Extension Spring, 59 mm x 8.5 mm OD
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RS Stock No.: 751-916Brand: RS PRO

AED 109.54

AED 10.954 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
59mm
98.6mm
8.5mm
1.2mm
62.8N
1.35N/mm
DIN 17223, BS 1408 CR3, RoHS
RS PRO Steel Extension Spring, 50 mm x 10 mm OD
RS PRO Steel Extension Spring, 50 mm x 10 mm OD
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RS Stock No.: 751-865Brand: RS PRO

AED 73.03

AED 7.303 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
50mm
142.2mm
10mm
0.9mm
24N
0.23N/mm
RoHS, DIN 17223, BS 1408 CR3
RS PRO Steel Extension Spring, 44.6 mm x 9 mm OD
RS PRO Steel Extension Spring, 44.6 mm x 9 mm OD
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RS Stock No.: 751-837Brand: RS PRO

AED 80.33

AED 8.033 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
44.6mm
130.2mm
9mm
0.8mm
19N
0.19N/mm
BS 1408 CR3, DIN 17223, RoHS
RS PRO Stainless Steel Extension Spring, 37.7 mm x 5.5 mm OD
RS PRO Stainless Steel Extension Spring, 37.7 mm x 5.5 mm OD
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RS Stock No.: 821-453Brand: RS PRO

AED 75.27

AED 7.527 Each (In a Pack of 10) (ex VAT)

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RS Pro
Stainless Steel
Extension Spring
37.7mm
116.1mm
5.5mm
0.5mm
6.5N
0.07N/mm
DIN 17223, BS 1408 CR3, RoHS
RS PRO Steel Extension Spring, 77.8 mm x 13 mm OD
RS PRO Steel Extension Spring, 77.8 mm x 13 mm OD
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RS Stock No.: 121-359Brand: RS PRO

AED 80.33

AED 16.066 Each (In a Pack of 5) (ex VAT)

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RS Pro
Steel
Extension Spring
77.8mm
97.4mm
13mm
2.5mm
317N
13.7N/mm
RoHS, DIN 17223, BS 1408 CR3
RS PRO Stainless Steel Extension Spring, 35 mm x 7 mm OD
RS PRO Stainless Steel Extension Spring, 35 mm x 7 mm OD
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RS Stock No.: 821-504Brand: RS PRO

AED 69.09

AED 6.909 Each (In a Pack of 10) (ex VAT)

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RS Pro
Stainless Steel
Extension Spring
35mm
101.5mm
7mm
0.63mm
1N
0.13N/mm
BS 1408 CR3, DIN 17223, RoHS
RS PRO Steel Extension Spring, 27.2 mm x 4 mm OD
RS PRO Steel Extension Spring, 27.2 mm x 4 mm OD
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RS Stock No.: 751-663Brand: RS PRO

AED 71.34

AED 7.134 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
27.2mm
95.7mm
4mm
0.36mm
4.26N
0.06N/mm
DIN 17223, RoHS, BS 1408 CR3
RS PRO Steel Extension Spring, 39.7 mm x 11 mm OD
RS PRO Steel Extension Spring, 39.7 mm x 11 mm OD
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RS Stock No.: 751-944Brand: RS PRO

AED 102.80

AED 10.28 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
39.7mm
58.4mm
11mm
1.6mm
111N
5.02N/mm
BS 1408 CR3, RoHS, DIN 17223
RS PRO Steel Extension Spring, 87.7 mm x 17 mm OD
RS PRO Steel Extension Spring, 87.7 mm x 17 mm OD
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RS Stock No.: 751-950Brand: RS PRO

AED 50.95

AED 50.95 1 Pack of 5 (ex VAT)

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RS Pro
Steel
Extension Spring
87.7mm
224.7mm
17mm
1.6mm
11N
0.46N/mm
RoHS, DIN 17223, BS 1408 CR3
RS PRO Steel Extension Spring, 85.5 mm x 18 mm OD
RS PRO Steel Extension Spring, 85.5 mm x 18 mm OD
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RS Stock No.: 121-365Brand: RS PRO

AED 119.37

AED 23.875 Each (In a Pack of 5) (ex VAT)

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RS Pro
Steel
Extension Spring
85.5mm
133.1mm
18mm
2.5mm
237N
4.27N/mm
RoHS, DIN 17223, BS 1408 CR3
RS PRO Stainless Steel Extension Spring, 24.5 mm x 3.5 mm OD
RS PRO Stainless Steel Extension Spring, 24.5 mm x 3.5 mm OD
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RS Stock No.: 821-431Brand: RS PRO

AED 66.29

AED 6.629 Each (In a Pack of 10) (ex VAT)

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RS Pro
Stainless Steel
Extension Spring
24.5mm
41.8mm
3.5mm
0.5mm
10N
0.49N/mm
DIN 17223, BS 1408 CR3, RoHS
RS PRO Steel Extension Spring, 44.1 mm x 6.3 mm OD
RS PRO Steel Extension Spring, 44.1 mm x 6.3 mm OD
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RS Stock No.: 751-859Brand: RS PRO

AED 67.98

AED 6.798 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
44.1mm
73.8mm
6.3mm
0.9mm
37.1N
1.06N/mm
DIN 17223, RoHS, BS 1408 CR3
RS PRO Steel Extension Spring, 32.6 mm x 9 mm OD
RS PRO Steel Extension Spring, 32.6 mm x 9 mm OD
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RS Stock No.: 751-821Brand: RS PRO

AED 82.57

AED 8.257 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
32.6mm
86.1mm
9mm
0.8mm
19N
0.3N/mm
DIN 17223, RoHS, BS 1408 CR3
RS PRO Steel Gate Spring, 200 mm
RS PRO Steel Gate Spring, 200 mm
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RS Stock No.: 894-6803Brand: RS PRO

AED 48.43

AED 48.43 Each (ex VAT)

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RS Pro
Steel
Gate Spring
200mm
-
-
-
-
-
No
RS PRO Steel Extension Spring, 34.4 mm x 12 mm OD
RS PRO Steel Extension Spring, 34.4 mm x 12 mm OD
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RS Stock No.: 751-893Brand: RS PRO

AED 81.46

AED 8.146 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
34.4mm
76.7mm
12mm
1.1mm
35.8N
0.72N/mm
DIN 17223, RoHS, BS 1408 CR3
RS PRO Stainless Steel Extension Spring, 27.7 mm x 5.5 mm OD
RS PRO Stainless Steel Extension Spring, 27.7 mm x 5.5 mm OD
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RS Stock No.: 821-447Brand: RS PRO

AED 69.09

AED 6.909 Each (In a Pack of 10) (ex VAT)

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RS Pro
Stainless Steel
Extension Spring
27.7mm
80mm
5.5mm
0.5mm
6.5N
0.11N/mm
DIN 17223, RoHS, BS 1408 CR3
RS PRO Steel Extension Spring, 25 mm x 5 mm OD
RS PRO Steel Extension Spring, 25 mm x 5 mm OD
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RS Stock No.: 751-691Brand: RS PRO

AED 62.35

AED 6.235 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
25mm
80.8mm
5mm
0.45mm
6.48N
0.11N/mm
DIN 17223, RoHS, BS 1408 CR3
RS PRO Steel Extension Spring, 75.4 mm x 11 mm OD
RS PRO Steel Extension Spring, 75.4 mm x 11 mm OD
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RS Stock No.: 751-887Brand: RS PRO

AED 93.25

AED 9.325 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
75.4mm
224.4mm
11mm
1mm
29.6N
0.17N/mm
RoHS, BS 1408 CR3, DIN 17223
RS PRO Stainless Steel Extension Spring, 30.4 mm x 6 mm OD
RS PRO Stainless Steel Extension Spring, 30.4 mm x 6 mm OD
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RS Stock No.: 821-475Brand: RS PRO

AED 69.09

AED 6.909 Each (In a Pack of 10) (ex VAT)

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RS Pro
Stainless Steel
Extension Spring
30.4mm
86.6mm
6mm
0.55mm
7.9N
0.12N/mm
BS 1408 CR3, DIN 17223, RoHS
RS PRO Steel Extension Spring, 35 mm x 7 mm OD
RS PRO Steel Extension Spring, 35 mm x 7 mm OD
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RS Stock No.: 751-770Brand: RS PRO

AED 65.16

AED 6.516 Each (In a Pack of 10) (ex VAT)

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RS Pro
Steel
Extension Spring
35mm
101.5mm
7mm
0.63mm
12.2N
0.16N/mm
DIN 17223, RoHS, BS 1408 CR3