Heavy Duty Eye Bolt Shield Anchor Expansion Bolts — Closed Hook, Eye & Triangular Head

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Sale price$3.11 USD
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In stock (500 units), ready to be shipped

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Description

Heavy Duty Eye Bolt Shield Anchor Expansion Bolts — Secure Anything to Concrete or Masonry

Whether you're a contractor anchoring structural brackets, a DIYer mounting a heavy shelf to a concrete wall, or a rigger hanging cables from a brick ceiling, finding an expansion bolt that holds firm under real load is non-negotiable. Stripped anchors, corroded threads, and mismatched head types waste time and create safety risks. These heavy duty shield anchor expansion bolts are engineered to give you a reliable, permanent fixing point in solid concrete, brick, and natural stone — every time.

Each bolt is a single-piece shield anchor expansion fastener with a metric coarse thread shank. Available in five distinct head styles — Closed Hook 90° (#A), Closed Hook 120° (#A), Closed Hook 90° (#B), Eye Bolt (fully closed loop), and Triangular Bolt — plus standard flat-shank variants for use with your own hardware. Sizes span M6 through M20, with shank lengths from 40mm (≈1.6") up to 250mm (≈9.8"). Material options include zinc-plated carbon steel, 201 stainless steel, 304 stainless steel, and 316 stainless steel to match your corrosion-resistance requirements.

Typical applications include hanging heavy-duty hooks and pulleys in garages and workshops, securing cable management systems and conduit runs to concrete ceilings, anchoring swing sets and outdoor rigging points to masonry walls, and installing structural brackets and safety rails in commercial construction. The eye bolt variants are especially popular for rope and cable attachment in industrial rigging, while the triangular bolt head suits strap and chain connections in load-bearing setups.

🔩 Compatible with: Solid concrete, brick & natural stone · Standard ISO metric coarse thread hardware · M6 / M8 / M10 / M12 / M14 / M16 / M20 · Carbide-tipped masonry drill bits (same diameter as bolt)

✅ Key Features of These Eye Bolt Shield Anchor Expansion Bolts

  • 🪝Five Head Styles in One Listing — Choose from closed hook (90° or 120°), fully closed eye bolt loop, or triangular bolt head to match your rigging, hanging, or anchoring application without sourcing from multiple suppliers.
  • 📏Wide Size Range: M6 to M20 — Covers light-duty M6 anchor points up to heavy structural M20 fixings, with shank lengths from 40mm (≈1.6") to 250mm (≈9.8") so you can match embedment depth to your base material thickness.
  • 🛡️Four Material Grades Available — Zinc-plated carbon steel for dry indoor use, 201 SS for general outdoor exposure, 304 SS for weather-resistant installations, and 316 SS for coastal or marine environments where chloride corrosion is a concern.
  • ⚙️Standard ISO Metric Coarse Thread — Fully compatible with standard metric nuts, washers, turnbuckles, and threaded fittings, making these shield anchor expansion bolts easy to integrate into existing hardware setups without adapters.
  • 🏗️Mechanical Expansion Sleeve Design — The shield sleeve expands radially against the drilled hole wall as the bolt is tightened, creating a secure mechanical interlock in solid concrete or masonry that resists both pull-out and shear forces.
  • 🔧Straightforward Installation — Drill, clean, insert, and tighten — no epoxy or special setting tools required. Compatible with standard hammer drills and carbide masonry bits, making these concrete wall anchor bolts accessible for both trade professionals and confident DIYers.

📐 Technical Specifications — Shield Anchor Expansion Bolts

⚠️ This listing covers multiple head types and sizes. Please confirm your selected variant's diameter and length before ordering. Contact us to confirm load ratings for a specific size.
Product Type Shield Anchor Expansion Bolt
Head Styles Closed Hook 90° (#A & #B), Closed Hook 120° (#A), Eye Bolt (closed loop), Triangular Bolt; flat-shank variants also available
Thread Standard ISO Metric Coarse Thread
Available Diameters M6, M6.5, M8, M10, M12, M14, M16, M20
Available Lengths 40mm (≈1.6") – 250mm (≈9.8"); varies by diameter and head type — see variant options
Material Options Zinc-Plated Carbon Steel · 201 Stainless Steel · 304 Stainless Steel · 316 Stainless Steel
Finish Zinc electroplating (zinc variants) / Brushed mill finish (stainless variants)
Anchor Mechanism Mechanical expansion sleeve (shield anchor / rawl bolt type)
Suitable Base Materials Solid concrete, brick, natural stone
Required Drill Bit Carbide-tipped masonry bit, same nominal diameter as bolt (e.g., 10mm bit for M10)
Load Rating See variant options — contact us to confirm for specific size
Reusability Permanent fastener — not designed for removal and reuse
Quantity per Order 1 piece per unit (sold individually)

❓ Frequently Asked Questions

How do I choose the right bolt length for my application?

Generally, the bolt length should provide at least 3–4 times the bolt diameter of embedment depth into the base material, plus the thickness of the fixture being fastened. For example, an M10 bolt (10mm diameter) fastening a 10mm bracket into concrete would typically need at least 60–80mm of embedment — so a total bolt length of around 70–90mm is a reasonable starting point. When in doubt, go longer and use a washer to take up any slack above the surface. Contact us with your fixture thickness and base material details if you need guidance.

What load capacity can these shield anchor expansion bolts handle?

Load capacity depends on the bolt diameter, embedment depth, base material strength, and head type. In general, M6 anchors in solid concrete typically handle light-duty loads, while M16–M20 anchors can handle significantly heavier structural loads. For safety-critical or load-bearing applications, always consult a structural engineer. Contact us to confirm load ratings for your specific size and material combination.

Can these expansion bolts be used outdoors or in wet environments?

Yes — with the right material choice. For outdoor or humid environments, we recommend 304 stainless steel variants. For coastal, marine, or high-chloride environments, choose 316 stainless steel, which offers the highest corrosion resistance in this range. Zinc-plated variants are generally suited for dry indoor use or light outdoor exposure. 201 stainless steel offers moderate corrosion resistance for general outdoor use.

Are these bolts compatible with standard metric nuts and hardware?

Yes. These shield anchor expansion bolts use standard ISO metric coarse threads, compatible with standard metric nuts, washers, turnbuckles, carabiners, and threaded fittings of the matching diameter. M6, M8, M10, M12, M14, M16, and M20 sizes all follow the standard metric coarse pitch for each diameter, integrating seamlessly with off-the-shelf metric hardware.

What is the difference between the Eye Bolt, Closed Hook, and Triangular Bolt head types?

The Eye Bolt head features a fully closed circular loop — ideal for attaching hooks, carabiners, shackles, cables, or ropes where the connection must not slip out. The Closed Hook variants (#A at 90° or 120°, and #B at 90°) have a bent hook head suited for hanging items directly without additional hardware — the angle difference affects how the hook faces relative to the wall. The Triangular Bolt head provides a triangular loop with a larger attachment surface, useful for rigging straps, chains, or multiple connection points.

What base materials are these shield anchors suitable for?

These shield anchor expansion bolts are designed for use in solid concrete, brick, and natural stone. They are generally not recommended for hollow block, aerated concrete (AAC/Hebel), or soft masonry without specialist anchors rated for those materials. Always ensure the base material is solid and free of cracks at the installation point for reliable holding strength.

Do I need a special drill bit or tool to install these anchors?

You will need a carbide-tipped masonry drill bit matching the anchor's nominal diameter (e.g., a 10mm masonry bit for an M10 anchor) and a hammer drill or rotary hammer. The process is straightforward: drill to the required depth, clean out the hole with a brush or compressed air, insert the anchor, and tighten the bolt to expand the shield sleeve. No epoxy or special setting tools are required.

Can I remove and reuse these expansion bolts after installation?

Shield anchor expansion bolts are generally considered permanent fasteners. Once the sleeve has expanded against the hole wall, removing the bolt typically damages the anchor and may also damage the surrounding base material. If you anticipate needing to remove the fastener in the future, consider a through-bolt or a removable anchor system instead.

🛒 Select your size and material above, then add to cart — ships from our US warehouse.

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