Are Sleeve Anchors a reliable solution for concrete and masonry fastening?
2025-08-04
What Are Sleeve Anchors?
Sleeve anchors are mechanical fasteners designed for securing objects to concrete, brick, or block. They consist of a threaded bolt, an expander sleeve, and a nut and washer. When tightened, the sleeve expands, creating a strong, vibration-resistant hold.
Key Features & Benefits
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High Load Capacity – Supports heavy-duty applications in construction and industrial settings.
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Easy Installation – Requires only a drilled hole and a wrench for secure fastening.
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Versatile Use – Suitable for solid concrete, hollow block, and brick.
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Corrosion-Resistant Options – Available in galvanized steel, stainless steel, and zinc-plated finishes.
Sleeve Anchor Specifications
Material & Finish Options
| Material | Finish | Corrosion Resistance | Best For |
|---|---|---|---|
| Carbon Steel | Zinc-Plated | Moderate | Indoor, Dry Environments |
| Stainless Steel | 304 or 316 Grade | High | Outdoor, Marine, Chemical |
| Hot-Dipped Galvanized | Galvanized Coating | High | High-Humidity & Industrial |
Standard Sizes & Load Ratings
| Diameter (Inch) | Minimum Embedment (Inch) | Pull-Out Strength (lbs) | Shear Strength (lbs) |
|---|---|---|---|
| 1/4" | 1" | 700 – 1,000 | 500 – 800 |
| 3/8" | 1-1/2" | 1,500 – 2,200 | 1,200 – 1,800 |
| 1/2" | 2" | 3,000 – 4,500 | 2,500 – 3,500 |
Sleeve Anchor FAQ
1. How deep should I drill the hole for a sleeve anchor?
The hole depth should be at least 1/2" deeper than the anchor’s embedment length to allow for dust clearance. For example, if using a 3/8" anchor with a 1-1/2" embedment, drill a 2" deep hole.
2. Can sleeve anchors be used in cracked concrete?
No, sleeve anchors are designed for solid concrete only. For cracked or unstable masonry, use wedge anchors or epoxy anchors for better stability.
3. What’s the difference between a sleeve anchor and a wedge anchor?
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Sleeve Anchor: Expands along its length, ideal for medium-duty loads in solid concrete or brick.
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Wedge Anchor: Expands at the bottom, providing higher pull-out strength for heavy-duty applications.
Why Choose Our Sleeve Anchors?
Zheli's sleeve anchors are manufactured to meet ASTM and ISO standards, ensuring durability and performance in demanding conditions. Whether for construction, HVAC, or machinery installations, we provide high-quality, reliable anchoring solutions.
Need custom sizes or bulk orders? Contact us today for expert support!
