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, 59 mm
RS PRO, 59 mm
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RS Stock No.751-916BrandRS PRO

13.060 OMR

1.306 OMR Each (In a Pack of 10) (ex VAT)

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RS Pro
-
-
59mm
98.6mm
-
1.2mm
9.34N
1.35N/mm
-
RS PRO, 50 mm
RS PRO, 50 mm
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RS Stock No.751-865BrandRS PRO

8.665 OMR

0.866 OMR Each (In a Pack of 10) (ex VAT)

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RS Pro
-
-
50mm
142.2mm
-
0.9mm
2.8N
0.23N/mm
-
RS PRO Steel Extension Spring, 44.6 mm x 9 mm OD
RS Stock No.751-837BrandRS PRO

9.544 OMR

0.954 OMR 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 Stock No.821-453BrandRS PRO

8.979 OMR

0.898 OMR 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, 77.8 mm
RS PRO, 77.8 mm
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RS Stock No.121-359BrandRS PRO

9.324 OMR

1.865 OMR Each (In a Pack of 5) (ex VAT)

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RS Pro
-
-
77.8mm
97.4mm
-
2.5mm
48.48N
13.7N/mm
-
RS PRO Stainless Steel Extension Spring, 35 mm x 7 mm OD
RS Stock No.821-504BrandRS PRO

8.226 OMR

0.822 OMR 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 Stock No.751-663BrandRS PRO

8.477 OMR

0.847 OMR 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, 39.7 mm
RS PRO, 39.7 mm
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RS Stock No.751-944BrandRS PRO

12.244 OMR

1.224 OMR Each (In a Pack of 10) (ex VAT)

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RS Pro
-
-
39.7mm
58.4mm
-
1.6mm
17.13N
5.02N/mm
-
RS PRO Steel Extension Spring, 87.7 mm x 17 mm OD
RS Stock No.751-950BrandRS PRO

5.990 OMR

5.990 OMR 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, 85.5 mm
RS PRO, 85.5 mm
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RS Stock No.121-365BrandRS PRO

13.845 OMR

2.769 OMR Each (In a Pack of 5) (ex VAT)

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RS Pro
-
-
85.5mm
133.1mm
-
2.5mm
35.02N
4.27N/mm
-
RS PRO Stainless Steel Extension Spring, 24.5 mm x 3.5 mm OD
RS Stock No.821-431BrandRS PRO

7.849 OMR

0.785 OMR 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, 44.1 mm
RS PRO, 44.1 mm
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RS Stock No.751-859BrandRS PRO

8.037 OMR

0.803 OMR Each (In a Pack of 10) (ex VAT)

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RS Pro
-
-
44.1mm
73.8mm
-
0.9mm
5.62N
1.06N/mm
-
RS PRO Steel Extension Spring, 32.6 mm x 9 mm OD
RS Stock No.751-821BrandRS PRO

9.858 OMR

0.986 OMR 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 Stock No.894-6803BrandRS PRO

5.809 OMR

5.809 OMR Each (ex VAT)

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RS Pro
Steel
Gate Spring
200mm
-
-
-
-
-
No
RS PRO, 34.4 mm
RS PRO, 34.4 mm
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RS Stock No.751-893BrandRS PRO

9.732 OMR

0.973 OMR Each (In a Pack of 10) (ex VAT)

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RS Pro
-
-
34.4mm
76.7mm
-
1.1mm
5.35N
0.72N/mm
-
RS PRO Stainless Steel Extension Spring, 27.7 mm x 5.5 mm OD
RS Stock No.821-447BrandRS PRO

8.226 OMR

0.822 OMR 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 Stock No.751-691BrandRS PRO

7.409 OMR

0.741 OMR 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, 75.4 mm
RS PRO, 75.4 mm
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RS Stock No.751-887BrandRS PRO

10.800 OMR

1.080 OMR Each (In a Pack of 10) (ex VAT)

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RS Pro
-
-
75.4mm
224.4mm
-
1mm
4.27N
0.17N/mm
-
RS PRO Stainless Steel Extension Spring, 30.4 mm x 6 mm OD
RS Stock No.821-475BrandRS PRO

8.226 OMR

0.822 OMR 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 Stock No.751-770BrandRS PRO

7.786 OMR

0.779 OMR 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