🔧 New Galvanized Hollow Wall Petal Nut – Fast Expansion & Reliable Hold
🔧 New Galvanized Hollow Wall Petal Nut – Fast Expansion & Reliable Hold
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🔧 New Galvanized Hollow Wall Petal Nut – Fast Expansion & Reliable Hold
A More Secure Way to Fasten Thin Hollow Materials
Stop struggling with fasteners that won't hold securely. These expansion anchor bolts create a firm grip behind thin hollow surfaces for stable, reliable fastening.
🔩 Built for Reliable Fastening
Made from carbon steel with a zinc-plated finish, these anchors are built to handle everyday installation jobs while helping resist surface wear and corrosion.
💪 Engineered for a Secure Grip
The expandable sleeve changes shape as the screw is tightened, helping distribute pressure behind the hollow surface instead of relying only on the front edge.
🛠️ One Fastener, Multiple Applications
Designed for 0–5 mm thin hollow substrates, making them useful for a range of workshop, repair and installation projects.
🚀 Easy 4-Step Installation
No complicated installation process. Once you've selected the correct size, installation takes just four straightforward steps.
✨ Small Details Make a Big Difference
From the threads to the expandable sleeve, each part is designed to work together for more predictable fastening.
📐 Choose the Right Size
| Size | Fit Range | Drill Hole | Screw Length | Screw Diameter | Sleeve Length |
|---|---|---|---|---|---|
| M4×20 | 0–5 mm | 8 mm | 20 mm | 4 mm | 16 mm |
| M5×25 | 0–5 mm | 10 mm | 25 mm | 5 mm | 18 mm |
| M6×25 | 0–5 mm | 12 mm | 25 mm | 6 mm | 20 mm |
Upgrade Your Next Fastening Job
Choose the size that fits your project and get the secure expansion grip you need without a complicated installation process.
Why Shop With Us?
Built For The Jobs Normal Screws Can't Handle
Still Stripping Screws In Thin Metal?
You know the feeling. You drive a standard screw into a hollow aluminum profile or thin sheet metal, and it just spins. The threads strip out, the hole gets ruined, and whatever you were trying to hang is completely useless. Stop relying on fasteners that aren't built for the job.
The Anchor That Locks From Behind
This isn't a standard wall plug. As you tighten the central screw, the zinc-plated carbon steel sleeve collapses and flares outward like petals. It distributes the weight across a massive surface area behind the wall, creating a rock-solid hold where standard screws just pull right out.
Heavy-Duty Carbon Steel Strength
Flimsy plastic anchors snap under pressure. These are forged from high-tensile carbon steel and finished with a smooth zinc plating. They bear serious weight and resist rust and corrosion, so your fixtures stay exactly where you mounted them—even in tough everyday environments.
Grips The Trickiest Substrates
Designed specifically for 0–5 mm thin hollow materials. Whether you are mounting fixtures to hollow aluminum alloy profiles, securing items to thin sheet metal, or fastening into hollow plastic boards, you get a firm, locking expansion feel every single time.
Stop Guessing When Your Anchor Is Set
Forget the frustration of over-tightening or leaving a fastener loose. These precision-machined threads provide immediate feedback as you work. You will feel the distinct resistance when the carbon steel petals fully collapse and lock against the substrate. It turns a three-step install into a permanent, vibration-resistant hold that won't vibrate loose or rattle in thin aluminum or plastic boards.
Professional Grade Sizes for Every Project
Don't get caught halfway through a job with the wrong hardware. This 30-piece kit provides M4, M5, and M6 diameters to handle everything from light trim to heavier fixtures on 0-5mm sheet metal. These zinc-plated anchors are the standard for contractors who can't afford a callback. Keep them in your truck so you're ready for the next hollow profile or thin-walled tubing repair that comes your way.
Why We Outperform
Standard drywall anchors and self-tapping screws fail miserably in thin hollow substrates. Here is why our expansion petal nuts are the only reliable choice.
| havengrand | Others | |
|---|---|---|
| Expands behind the wall for maximum grip | ||
| High-tensile carbon steel construction | ||
| Zinc-plated for corrosion resistance | ||
| Specifically designed for 0-5mm thin materials | ||
| Prone to stripping and spinning in the hole |
Real Feedback from Customers
Frequently Asked Questions
What material thickness can these handle?
What material thickness can these handle?
These expansion anchor bolts are specifically engineered for thin hollow substrates ranging from 0 to 5 mm in thickness, making them perfect for sheet metal and aluminum profiles.
Do I need a special tool to install them?
Do I need a special tool to install them?
No special tools required. Just drill the correct-sized hole (8mm for M4, 10mm for M5, 12mm for M6), insert the anchor, and tighten the central screw with a standard screwdriver.
Will these rust if used outdoors?
Will these rust if used outdoors?
They are made from durable carbon steel with a smooth zinc-plated finish, which provides excellent resistance to surface wear and everyday corrosion.
How many come in a pack?
How many come in a pack?
Each order includes a pack of 30 petal nuts. You can choose between M4x20, M5x25, or M6x25 sizes depending on your specific project needs.