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

€ 27.83

€ 2.783 Each (In a Pack of 10) (Exc. Vat)

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10

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10€ 2.783
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RS Pro
Extension Spring
Steel
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

€ 18.15

€ 1.815 Each (In a Pack of 10) (Exc. Vat)

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10

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10€ 1.815
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RS Pro
Extension Spring
Steel
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

€ 19.96

€ 1.996 Each (In a Pack of 10) (Exc. Vat)

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10

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10€ 1.996
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RS Pro
Extension Spring
Steel
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

€ 18.76

€ 1.876 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 1.876
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RS Pro
Extension Spring
Stainless Steel
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

€ 18.45

€ 3.69 Each (In a Pack of 5) (Exc. Vat)

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5

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5€ 3.69
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RS Pro
Extension Spring
Steel
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

€ 17.54

€ 1.754 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 1.754
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RS Pro
Extension Spring
Stainless Steel
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

€ 18.15

€ 1.815 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 1.815
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RS Pro
Extension Spring
Steel
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

€ 26.02

€ 2.602 Each (In a Pack of 10) (Exc. Vat)

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10

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10€ 2.602
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RS Pro
Extension Spring
Steel
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

€ 10.77

€ 10.77 1 Pack of 5 (Exc. Vat)

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1

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1€ 10.77
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RS Pro
Extension Spring
Steel
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

€ 27.83

€ 5.566 Each (In a Pack of 5) (Exc. Vat)

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5

Available in multiples of 5
5€ 5.566
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RS Pro
Extension Spring
Steel
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

€ 16.34

€ 1.634 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 1.634
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RS Pro
Extension Spring
Stainless Steel
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

€ 16.94

€ 1.694 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 1.694
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RS Pro
Extension Spring
Steel
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

€ 20.57

€ 2.057 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 2.057
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RS Pro
Extension Spring
Steel
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

€ 8.71

€ 8.71 Each (Exc. Vat)

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1

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1€ 8.71
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RS Pro
Gate Spring
Steel
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

€ 20.57

€ 2.057 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 2.057
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RS Pro
Extension Spring
Steel
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

€ 17.54

€ 1.754 Each (In a Pack of 10) (Exc. Vat)

Check stock

10

Available in multiples of 10
10€ 1.754
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RS Pro
Extension Spring
Stainless Steel
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

€ 15.73

€ 1.573 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 1.573
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RS Pro
Extension Spring
Steel
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

€ 22.99

€ 2.299 Each (In a Pack of 10) (Exc. Vat)

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10

Available in multiples of 10
10€ 2.299
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RS Pro
Extension Spring
Steel
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

€ 17.54

€ 1.754 Each (In a Pack of 10) (Exc. Vat)

Check stock

10

Available in multiples of 10
10€ 1.754
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RS Pro
Extension Spring
Stainless Steel
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

€ 16.34

€ 1.634 Each (In a Pack of 10) (Exc. Vat)

Check stock

10

Available in multiples of 10
10€ 1.634
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RS Pro
Extension Spring
Steel
35mm
101.5mm
7mm
0.63mm
12.2N
0.16N/mm
DIN 17223, RoHS, BS 1408 CR3