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, 59mm x 8.5mm
RS Stock No.: 751-916Brand: RS PROHSN Code: 73202081

SR 14.674

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RS Pro
Steel
59mm
98.6mm
8.5mm
1.2mm
62.8N
1.35N/mm
RS PRO Steel Extension Spring, 50mm x 10mm
RS Stock No.: 751-865Brand: RS PROHSN Code: 73202089

SR 9.764

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RS Pro
Steel
50mm
142.20mm
10mm
0.9mm
24N
0.23N/mm
RS PRO Steel Extension Spring, 44.6mm x 9mm
RS Stock No.: 751-837Brand: RS PROHSN Code: 73202089

SR 10.66

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RS Pro
Steel
44.6mm
130.20mm
9mm
0.8mm
19N
0.19N/mm
RS PRO Stainless Steel Extension Spring, 37.7mm x 5.5mm
RS Stock No.: 821-453Brand: RS PROHSN Code: 73202085

SR 9.844

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RS Pro
Stainless Steel
37.7mm
116.10mm
5.5mm
0.5mm
6.50N
0.07N/mm
RS PRO Steel Extension Spring, 77.8mm x 13mm
RS Stock No.: 121-359Brand: RS PROHSN Code: 73202085

SR 20.562

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RS Pro
Steel
77.8mm
97.4mm
13mm
2.5mm
317N
13.7N/mm
RS PRO Stainless Steel Extension Spring, 35mm x 7mm
RS Stock No.: 821-504Brand: RS PROHSN Code: 73202085

SR 9.096

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RS Pro
Stainless Steel
35mm
101.50mm
7mm
0.63mm
1N
0.13N/mm
RS PRO Steel Extension Spring, 27.2mm x 4mm
RS Stock No.: 751-663Brand: RS PROHSN Code: 73202089

SR 9.326

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RS Pro
Steel
27.2mm
95.7mm
4mm
0.36mm
4.26N
0.06N/mm
RS PRO Steel Extension Spring, 39.7mm x 11mm
RS Stock No.: 751-944Brand: RS PROHSN Code: 73202081

SR 13.72

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RS Pro
Steel
39.7mm
58.4mm
11mm
1.6mm
111N
5.02N/mm
RS PRO Steel Extension Spring, 87.7mm x 17mm
RS Stock No.: 751-950Brand: RS PROHSN Code: 73202081

SR 62.61

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RS Pro
Steel
87.7mm
224.70mm
17mm
1.6mm
11N
0.46N/mm
RS PRO Steel Extension Spring, 85.5mm x 18mm
RS Stock No.: 121-365Brand: RS PROHSN Code: 73202085

SR 30.935

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RS Pro
Steel
85.5mm
133.10mm
18mm
2.5mm
237N
4.27N/mm
RS PRO Stainless Steel Extension Spring, 24.5mm x 3.5mm
RS Stock No.: 821-431Brand: RS PROHSN Code: 73202085

SR 8.636

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RS Pro
Stainless Steel
24.5mm
41.80mm
3.5mm
0.5mm
10N
0.49N/mm
RS PRO Steel Extension Spring, 44.1mm x 6.3mm
RS Stock No.: 751-859Brand: RS PROHSN Code: 73202089

SR 8.993

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RS Pro
Steel
44.1mm
73.80mm
6.3mm
0.9mm
37.1N
1.06N/mm
RS PRO Steel Extension Spring, 32.6mm x 9mm
RS Stock No.: 751-821Brand: RS PROHSN Code: 73202089

SR 10.925

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RS Pro
Steel
32.6mm
86.1mm
9mm
0.8mm
19N
0.3N/mm
RS PRO Steel Gate Spring, 200mm
RS Stock No.: 894-6803Brand: RS PROHSN Code: 73202089

SR 55.08

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RS Pro
Steel
200mm
-
-
-
-
-
RS PRO Steel Extension Spring, 34.4mm x 12mm
RS Stock No.: 751-893Brand: RS PROHSN Code: 73202081

SR 10.833

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RS Pro
Steel
34.4mm
76.70mm
12mm
1.1mm
35.8N
0.72N/mm
RS PRO Stainless Steel Extension Spring, 27.7mm x 5.5mm
RS Stock No.: 821-447Brand: RS PROHSN Code: 73202085

SR 9.05

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RS Pro
Stainless Steel
27.7mm
80mm
5.5mm
0.5mm
6.5N
0.11N/mm
RS PRO Steel Extension Spring, 25mm x 5mm
RS Stock No.: 751-691Brand: RS PROHSN Code: 73202089

SR 8.154

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RS Pro
Steel
25mm
80.80mm
5mm
0.45mm
6.48N
0.11N/mm
RS PRO Steel Extension Spring, 75.4mm x 11mm
RS Stock No.: 751-887Brand: RS PROHSN Code: 73202081

SR 12.34

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RS Pro
Steel
75.4mm
224.40mm
11mm
1mm
29.6N
0.17N/mm
RS PRO Stainless Steel Extension Spring, 30.4mm x 6mm
RS Stock No.: 821-475Brand: RS PROHSN Code: 73202085

SR 9.062

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RS Pro
Stainless Steel
30.4mm
86.60mm
6mm
0.55mm
7.9N
0.12N/mm
RS PRO Steel Extension Spring, 35mm x 7mm
RS Stock No.: 751-770Brand: RS PROHSN Code: 73202089

SR 8.59

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RS Pro
Steel
35mm
101.5mm
7mm
0.63mm
12.2N
0.16N/mm