Ground Anchors Screw in, Spiral Trampoline Anchors with Nut

The Verdict

If you’ve ever watched a trampoline cartwheel across your yard during a thunderstorm, you know the sinking feeling. This set of spiral ground anchors is designed to end that drama. With a 4.7-star average across 235 ratings, these screw-in stakes have clearly earned their place in many backyards. But do they live up to the hype in real soil, real wind, and real use? I dug into the specs, the feedback, and the physics to give you the straight story.

What’s in the Package

You’re getting four spiral anchors, each measuring roughly 8 inches in shaft length with a 2.5-inch diameter helical coil at the base. The top is a hexagonal nut—standard 10mm—that accepts a socket or wrench. That’s it. No installation tool, no carrying case, no instructions beyond what’s printed on the packaging. For the price point, that’s acceptable, but set your expectations: you’ll need your own ratchet or breaker bar to drive these into the ground.

How They Perform in the Real World

The galvanized steel construction is the standout feature here. Unlike cheaper painted stakes that flake after one winter, these resist corrosion well. I’ve seen reports from buyers in the Pacific Northwest and Northeast who’ve left them installed year-round with no rust pitting—one reviewer noted, “Two seasons in and they still look brand new, even after snow and salt exposure.”

The spiral design does the heavy lifting. As shown in the product image, the threads are aggressive and wide, which means they grip soil rather than just displacing it. In typical backyard loam or clay, a 10mm socket on a ratchet will spin these down in under two minutes per anchor. The holding power is genuinely impressive—several customers report their trampolines surviving 40+ mph gusts without shifting an inch. One verified buyer wrote, “I was skeptical, but these held our 14-foot trampoline through a tornado warning. Not a single anchor pulled loose.”

What Buyers Consistently Praise

The overwhelming theme in the 235 reviews is confidence. Parents appreciate the peace of mind, and the installation ease gets frequent shout-outs. The hex nut top is a smart design choice—it lets you torque the anchor down flush with the ground, eliminating trip hazards. Multiple reviewers also note that the anchors work for more than trampolines: swing sets, sheds, dog runs, and even large umbrellas are all mentioned as successful applications.

Where It Falls Short

Honesty time. The 8-inch shaft is the limiting factor in loose, sandy, or friable soil. Several reviewers in coastal areas report that the anchors spin freely without gaining purchase, requiring them to either relocate or add concrete footings. If your yard is pure sand, look for a longer anchor (12+ inches) instead.

Second, the lack of an included installation tool is a minor annoyance. A 10mm socket and a sturdy ratchet work fine, but if you’re buying these as a gift or for someone without a toolset, budget an extra $10 for a socket wrench. Also, the anchors are not designed for rocky ground—you’ll need a pilot hole or a different approach entirely if your soil is full of stones.

Who Should Buy These

• Trampoline owners in windy regions — this is your primary target. The holding power is proven.
• DIY parents who want a quick, tool-friendly install without calling in a contractor.
• Shed and swing set owners looking for a budget-friendly tie-down solution (check your structure’s anchor points first).

Skip these if your ground is sandy, rocky, or if you need a permanent concrete-set solution. Also skip if you don’t own basic tools—the lack of an included wrench will frustrate you.

FAQ

Q: Will these fit my trampoline’s existing anchor holes?
A: The nut top is 10mm, and the shaft is straight. Most trampoline frames have U-brackets or straps that wrap around the frame, so you’ll place the anchor adjacent to the leg and secure it with the provided nut. Check your frame’s diameter—these work best with frames up to 2 inches thick.

Q: How deep do they go?
A: The shaft is 8 inches, but the spiral coil adds effective depth to roughly 10 inches once fully seated. In hard clay, you may not get the last inch flush—use a breaker bar for extra torque.

Q: Can I remove them and reinstall later?
A: Yes. Unscrew with a ratchet and they come out clean, leaving small holes that grass will recover from in a few weeks. The galvanized coating holds up to multiple install/removal cycles.

The Verdict

Buy it if you want a reliable, corrosion-resistant way to keep your trampoline grounded through storm season, and you have basic tools on hand. The 4.7-star rating is earned—these anchors perform as advertised in standard soil conditions.

Skip it if your yard is sandy or rocky, or if you’re looking for a fully self-contained kit with installation tools included.

Rating: 4.6/5 — A solid, no-nonsense product that solves a real problem, with minor caveats around soil type and tool requirements.

Where to Buy

👉 Check Price on Amazon →

We earn a small commission at no extra cost to you — this helps fund more honest reviews.

Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.