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) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 170 mm |
| Extended Length (EL) | 295 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 240 mm |
| Extended Length (EL) | 397 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 210 mm |
| Extended Length (EL) | 257 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 210 mm |
| Extended Length (EL) | 281 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 220 mm |
| Extended Length (EL) | 295 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 160 mm |
| Extended Length (EL) | 231 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 270 mm |
| Extended Length (EL) | 458 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 240 mm |
| Extended Length (EL) | 301 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 240 mm |
| Extended Length (EL) | 332 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 35 mm |
| Free Length (FL) | 290 mm |
| Extended Length (EL) | 469 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 190 mm |
| Extended Length (EL) | 251 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 270 mm |
| Extended Length (EL) | 345 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 300 mm |
| Extended Length (EL) | 435 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 260 mm |
| Extended Length (EL) | 479 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 160 mm |
| Extended Length (EL) | 231 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 300 mm |
| Extended Length (EL) | 390 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 270 mm |
| Extended Length (EL) | 384 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 230 mm |
| Extended Length (EL) | 418 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 190 mm |
| Extended Length (EL) | 282 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 300 mm |
| Extended Length (EL) | 519 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 280 mm |
| Extended Length (EL) | 384 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 330 mm |
| Extended Length (EL) | 581 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 5 mm |
| Outside Diameter (OD) | 40 mm |
| Free Length (FL) | 290 mm |
| Extended Length (EL) | 541 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 250 mm |
| Extended Length (EL) | 340 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 330 mm |
| Extended Length (EL) | 434 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 280 mm |
| Extended Length (EL) | 437 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 360 mm |
| Extended Length (EL) | 478 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 42 mm |
| Free Length (FL) | 250 mm |
| Extended Length (EL) | 385 mm |
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 6 mm |
| Outside Diameter (OD) | 36 mm |
| Free Length (FL) | 310 mm |
| Extended Length (EL) | 428 mm |
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