Tension springs hold load by stretching: the coiled wire resists extension and pulls components back to their resting position when the load is released. They appear throughout industrial machinery, agricultural equipment, garage door mechanisms, and general fabrication wherever a controlled return force is needed, and replacing a fatigued or broken spring with one of the correct specification is a straightforward job when you have the right part to hand.
Selecting the correct tension spring means matching four attributes: wire diameter, outside diameter, free length, and the hook or loop end configuration. A 200mm extension spring, for example, will be specified by its coil diameter and wire gauge as much as its overall length, because the spring rate depends on all three. Material grade also matters: standard carbon steel suits most indoor applications, while stainless or zinc-plated versions are the preferred choice for damp environments or exterior assemblies. Each listing on PartsForMachines carries the dimensional data needed to cross-reference against the original part or a measured sample. Across this section, Metrol supplies the tension spring.
When a spring fails in a paired or multi-spring assembly, trade practice is to replace all springs in that set together. Mixing a new spring with a fatigued one creates an uneven load that shortens the life of the replacement. If the original specification is worn or illegible, callipers on the wire and coil body will give you the key figures; the free length is measured hook-tip to hook-tip with no load applied.
For sizing confirmation or trade quantities, contact the team via WhatsApp 07754288583 or email [email protected].
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 18 mm |
| Free Length (FL) | 210 mm |
| Extended Length (EL) | 296 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 32 mm |
| Free Length (FL) | 140 mm |
| Extended Length (EL) | 251 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 18 mm |
| Free Length (FL) | 185 mm |
| Extended Length (EL) | 271 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 4 mm |
| Outside Diameter (OD) | 24 mm |
| Free Length (FL) | 115 mm |
| Extended Length (EL) | 158 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 27 mm |
| Free Length (FL) | 165 mm |
| Extended Length (EL) | 298 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 23 mm |
| Free Length (FL) | 270 mm |
| Extended Length (EL) | 493 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 4 mm |
| Outside Diameter (OD) | 30 mm |
| Free Length (FL) | 180 mm |
| Extended Length (EL) | 284 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 22 mm |
| Free Length (FL) | 200 mm |
| Extended Length (EL) | 278 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 2,5 mm |
| Outside Diameter (OD) | 17 mm |
| Free Length (FL) | 260 mm |
| Extended Length (EL) | 421 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 28 mm |
| Free Length (FL) | 125 mm |
| Extended Length (EL) | 285 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 27 mm |
| Free Length (FL) | 200 mm |
| Extended Length (EL) | 333 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 28 mm |
| Free Length (FL) | 150 mm |
| Extended Length (EL) | 310 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 28 mm |
| Free Length (FL) | 155 mm |
| Extended Length (EL) | 368 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 28 mm |
| Free Length (FL) | 180 mm |
| Extended Length (EL) | 393 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 2,5 mm |
| Outside Diameter (OD) | 17 mm |
| Free Length (FL) | 235 mm |
| Extended Length (EL) | 396 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 2,5 mm |
| Outside Diameter (OD) | 20 mm |
| Free Length (FL) | 235 mm |
| Extended Length (EL) | 479 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 23 mm |
| Free Length (FL) | 215 mm |
| Extended Length (EL) | 407 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 2,5 mm |
| Outside Diameter (OD) | 24 mm |
| Free Length (FL) | 205 mm |
| Extended Length (EL) | 533 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 4 mm |
| Outside Diameter (OD) | 24 mm |
| Free Length (FL) | 150 mm |
| Extended Length (EL) | 193 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 23 mm |
| Free Length (FL) | 180 mm |
| Extended Length (EL) | 311 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 22 mm |
| Free Length (FL) | 135 mm |
| Extended Length (EL) | 196 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 27 mm |
| Free Length (FL) | 230 mm |
| Extended Length (EL) | 393 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 2,5 mm |
| Outside Diameter (OD) | 24 mm |
| Free Length (FL) | 260 mm |
| Extended Length (EL) | 644 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 27 mm |
| Free Length (FL) | 135 mm |
| Extended Length (EL) | 238 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 4 mm |
| Outside Diameter (OD) | 30 mm |
| Free Length (FL) | 150 mm |
| Extended Length (EL) | 226 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 18 mm |
| Free Length (FL) | 240 mm |
| Extended Length (EL) | 341 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 22 mm |
| Free Length (FL) | 170 mm |
| Extended Length (EL) | 231 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 28 mm |
| Free Length (FL) | 210 mm |
| Extended Length (EL) | 473 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3,5 mm |
| Outside Diameter (OD) | 27 mm |
| Free Length (FL) | 225 mm |
| Extended Length (EL) | 420 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 3 mm |
| Outside Diameter (OD) | 18 mm |
| Free Length (FL) | 245 mm |
| Extended Length (EL) | 363 mm |
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