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 PRO

BD 12.122

BD 1.212 Each (In a Pack of 10) (Exc. Vat)

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RS Pro
Steel
59mm
98.6mm
8.5mm
1.2mm
9.34N
1.35N/mm
RS PRO Steel Extension Spring, 50mm x 10mm
RS Stock No.: 751-865Brand: RS PRO

BD 8.039

BD 0.804 Each (In a Pack of 10) (Exc. Vat)

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RS Pro
Steel
50mm
142.20mm
10mm
0.9mm
2.8N
0.23N/mm
RS PRO Steel Extension Spring, 44.6mm x 9mm
RS Stock No.: 751-837Brand: RS PRO

BD 8.804

BD 0.880 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 8.230

BD 0.823 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 8.709

BD 1.741 Each (In a Pack of 5) (Exc. Vat)

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RS Pro
Steel
77.8mm
97.4mm
13mm
2.5mm
48.48N
13.7N/mm
RS PRO Stainless Steel Extension Spring, 35mm x 7mm
RS Stock No.: 821-504Brand: RS PRO

BD 7.528

BD 0.752 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 7.784

BD 0.779 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 11.293

BD 1.130 Each (In a Pack of 10) (Exc. Vat)

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RS Pro
Steel
39.7mm
58.4mm
11mm
1.6mm
17.13N
5.02N/mm
RS PRO Steel Extension Spring, 87.7mm x 17mm
RS Stock No.: 751-950Brand: RS PRO

BD 5.436

BD 5.436 1 Pack of 5 (Exc. Vat)

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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 PRO

BD 13.079

BD 2.616 Each (In a Pack of 5) (Exc. Vat)

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RS Pro
Steel
85.5mm
133.10mm
18mm
2.5mm
35.02N
4.27N/mm
RS PRO Stainless Steel Extension Spring, 24.5mm x 3.5mm
RS Stock No.: 821-431Brand: RS PRO

BD 7.209

BD 0.721 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 7.401

BD 0.740 Each (In a Pack of 10) (Exc. Vat)

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RS Pro
Steel
44.1mm
73.80mm
6.3mm
0.9mm
5.62N
1.06N/mm
RS PRO Steel Extension Spring, 32.6mm x 9mm
RS Stock No.: 751-821Brand: RS PRO

BD 9.060

BD 0.906 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 4.970

BD 4.970 Each (Exc. Vat)

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

BD 8.932

BD 0.893 Each (In a Pack of 10) (Exc. Vat)

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RS Pro
Steel
34.4mm
76.70mm
12mm
1.1mm
5.35N
0.72N/mm
RS PRO Stainless Steel Extension Spring, 27.7mm x 5.5mm
RS Stock No.: 821-447Brand: RS PRO

BD 7.528

BD 0.752 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 6.827

BD 0.683 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 10.272

BD 1.027 Each (In a Pack of 10) (Exc. Vat)

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RS Pro
Steel
75.4mm
224.40mm
11mm
1mm
4.27N
0.17N/mm
RS PRO Stainless Steel Extension Spring, 30.4mm x 6mm
RS Stock No.: 821-475Brand: RS PRO

BD 7.528

BD 0.752 Each (In a Pack of 10) (Exc. Vat)

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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 PRO

BD 7.273

BD 0.727 Each (In a Pack of 10) (Exc. Vat)

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