The Sleeve Anchor with Eye Bolt (also known as a “Closed Loop Sleeve Anchor” or “Masonry Eye Bolt”) is the safest expansion fastener for securing cables, chains, and wires to concrete surfaces. Unlike open hooks where the load can accidentally slip off during vibration or slack, the Sleeve Anchor with Eye Bolt features a fully closed ring, ensuring a permanent, tamper-proof attachment point for clotheslines, gym equipment, and security barriers.
Product Overview: Crafted from high-tensile Carbon Steel and finished with Yellow Zinc Plating, our anchors offer robust protection against rust and corrosion. The intelligent design includes a hex nut for torque-controlled expansion, allowing the installer to orient the eye perfectly vertical or horizontal before locking it in place.
Sleeve Anchor with Eye Bolt Specifications
| Product Name | Sleeve Anchor with Eye Bolt / Expansion Eye Bolt |
| Material | Carbon Steel (Grade 4.8 / 5.8) |
| Finish | Yellow Zinc Plated (Passivated) |
| Head Style | Closed Eye / O-Hook |
| Suitable Substrate | Concrete, Solid Red Brick, Solid Block |
Engineering Insight: Open Hook vs. Closed Eye
When should you specify a Sleeve Anchor with Eye Bolt instead of a C-Hook?
- Safety & Security: If the attached item moves (like a swinging sign or a shade sail in the wind), an open hook is dangerous because the cable can jump out. The Closed Eye eliminates this risk completely.
- Side Loading: While all anchors are strongest in tension (straight pull), a closed eye structure is generally more rigid and resistant to deformation under mild side-loading compared to an open C-hook which might bend open.
For more details on bolt types, please refer to the Eye bolt entry on Wikipedia.
Installation Guide
- Drill: Drill a hole equal to the anchor diameter (e.g., 10mm hole for M8 anchor) into the masonry.
- Insert: Tap the Sleeve Anchor with Eye Bolt into the hole until the washer is flush with the wall.
- Orient: Rotate the eye so it faces the direction you need (e.g., align it with your cable).
- Tighten: Hold the eye steady and tighten the Hex Nut underneath it with a wrench. This expands the sleeve without spinning the eye out of alignment.
Frequently Asked Questions (FAQ)
Q: What is the inner diameter of the eye?
A: It varies by size. Typically, an M6 anchor has an eye ID of ~10mm, M8 is ~12mm, and M10 is ~15mm. Please check our datasheet for exact dimensions to ensure your carabiner or rope fits.
Q: Can I use this for a hammock?
A: For human suspension, safety is paramount. While the anchor is strong, the masonry wall quality is the variable. We recommend using larger sizes (M10 or M12) and conducting a pull-out test on your specific wall before use.
Need Concrete Eye Bolts?
Handan Bolt manufactures reliable Sleeve Anchors with Eye Bolt in sizes M6, M8, M10, and M12. We are the trusted source for shade sail installers and gym fitters.
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