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Extension Spring — 1/2 in. Diameter, 2 in. Length, Steel, Zinc Finish, 6-Pack
- Mfg.#
- 540087
- Sku#
- 7700099
- Max length of 2.5 mm and spring rate of 38.22 lb/in
- Features steel construction with a protective zinc finish to resist corrosion
- Measures 1/2 in diameter and 2 in length for compatible installations
- Offers a spring rate of 38.22 lb/in for consistent extension performance
- Designed for use as conventional extension springs in various applications
* Estimated stock levels as of Sat, May 23, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
The HILLMAN 1/2 x 2-Inch #29 Extension Spring is a compact, zinc-finished steel spring designed for projects that need reliable tension and corrosion resistance. You’ll want this spring when repairing or replacing worn extension springs in small mechanisms or adding controlled pull force to DIY builds, because its 1/2-inch diameter and 2-inch free length provide a predictable fit for many applications. With a spring rate of 38.22 lb/in, it delivers a firm, consistent response under load, and the zinc finish helps resist rust in everyday indoor and sheltered outdoor use. Sold as a 6-pack, these #29 style springs are handy to keep on hand for multiple repairs or iterative prototyping when tuning tension in hardware, appliances, hobby mechanisms, or light machinery.
Specifications
General
| Finish | Zinc |
|---|---|
| Material | Steel |
| Style | #29 |
Dimensions
| Diameter | 1/2 in |
|---|---|
| Length | 2 in |
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