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 Stock No.: 751-916Brand: RS PRO

AED 105.61

AED 10.561 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
59mm
98.6mm
8.5 mm
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 Stock No.: 751-865Brand: RS PRO

AED 70.22

AED 7.022 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
50mm
142.2mm
10 mm
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 Stock No.: 751-837Brand: RS PRO

AED 77.52

AED 7.752 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
44.6mm
130.2mm
9 mm
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.: 821-453Brand: RS PRO

AED 72.47

AED 7.247 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Stainless Steel
37.7mm
116.1mm
5.5 mm
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 Stock No.: 121-359Brand: RS PRO

AED 74.15

AED 14.83 Each (In a Pack of 5) (ex VAT)

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RS Pro
Extension Spring
Steel
77.8mm
97.4mm
13 mm
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 Stock No.: 821-504Brand: RS PRO

AED 66.29

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

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RS Pro
Extension Spring
Stainless Steel
35mm
101.5mm
7 mm
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.: 751-663Brand: RS PRO

AED 68.53

AED 6.853 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
27.2mm
95.7mm
4 mm
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 Stock No.: 751-944Brand: RS PRO

AED 98.87

AED 9.887 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
39.7mm
58.4mm
11 mm
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 Stock No.: 751-950Brand: RS PRO

AED 46.06

AED 46.06 1 Pack of 5 (ex VAT)

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RS Pro
Extension Spring
Steel
87.7mm
224.7mm
17 mm
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 Stock No.: 121-365Brand: RS PRO

AED 111.51

AED 22.302 Each (In a Pack of 5) (ex VAT)

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RS Pro
Extension Spring
Steel
85.5mm
133.1mm
18 mm
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 Stock No.: 821-431Brand: RS PRO

AED 63.48

AED 6.348 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Stainless Steel
24.5mm
41.8mm
3.5 mm
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 Stock No.: 751-859Brand: RS PRO

AED 65.16

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

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RS Pro
Extension Spring
Steel
44.1mm
73.8mm
6.3 mm
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 Stock No.: 751-821Brand: RS PRO

AED 79.77

AED 7.977 Each (In a Pack of 10) (ex VAT)

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

AED 41.85

AED 41.85 Each (ex VAT)

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

AED 78.64

AED 7.864 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
34.4mm
76.7mm
12 mm
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 Stock No.: 821-447Brand: RS PRO

AED 66.29

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

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RS Pro
Extension Spring
Stainless Steel
27.7mm
80mm
5.5 mm
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.: 751-691Brand: RS PRO

AED 60.10

AED 6.01 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
25mm
80.8mm
5 mm
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 Stock No.: 751-887Brand: RS PRO

AED 87.63

AED 8.763 Each (In a Pack of 10) (ex VAT)

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RS Pro
Extension Spring
Steel
75.4mm
224.4mm
11 mm
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 Stock No.: 821-475Brand: RS PRO

AED 66.29

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

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RS Pro
Extension Spring
Stainless Steel
30.4mm
86.6mm
6 mm
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.: 751-770Brand: RS PRO

AED 62.92

AED 6.292 Each (In a Pack of 10) (ex VAT)

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