Extension Spring Set | 5pcs 0.6-1.2mm Spring Steel | 20-50mm Length
This versatile lot of five extension springs is crafted from high-quality spring steel, offering a selection of wire diameters and lengths for various light-duty mechanical applications. They provide ...
- Secure checkout
- All major cards
- Tracked delivery
Good to know
Questions about this product
- How many springs come in this set and what sizes?
- You get five extension springs, each a different wire diameter: 0.6, 0.7, 0.8, 1.0, and 1.2mm. Lengths run from 20mm up to 50mm unloaded. That assortment covers a range of light-duty tension jobs.
- What are these little extension springs good for?
- They pull parts back into place, hold tension, or counterbalance light loads in small mechanisms. People use them to repair toys, small appliances, and latches, or for prototyping. The full-loop hook ends make them easy to attach.
- How far can I stretch these springs and how long do they last?
- Maximum extension is 150 to 200% of the spring's free length, so don't pull past that. Rated fatigue life is at least 100,000 cycles. They work from -40C up to 120C, which suits most indoor mechanisms.
Replacement Parts spec sheet (PDF)
Get a one-page sheet with full description, specifications, technical details, FAQs, price & SKU - handy to save, print, or share.
Not sure which one?
Compare with similar products
Nothing close enough to compare right now
We only put products side by side when they are genuinely the same kind of thing, in stock and in a similar price range. For this one there is no true match at the moment, so we would rather show you nothing than the wrong thing.
Compare options
More Replacement Parts
Explore the range
Popular in Tools & Hardware
Complete the set



































