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Whether you're mounting a structural bracket to a concrete wall, securing equipment to a block foundation, or anchoring railing posts into brick, finding a fastener that won't pull out under load is non-negotiable. DIYers and contractors alike need concrete expansion anchor bolts that expand firmly on installation and stay put — not fasteners that spin loose or crack the surrounding material.
Each set contains sleeve-style expansion anchor bolts in your chosen size and quantity (1, 2, 5, or 10 pieces per pack). Thread diameters range from M6 (6mm / ≈1/4") to M16 (16mm / ≈5/8"), with shank lengths from 50mm (≈2") up to 200mm (≈7.9") — giving you the reach needed for thick fixtures, insulated walls, or deep embedment requirements. The carbon steel construction with a zinc or galvanized finish provides the strength and corrosion resistance needed for most indoor and covered outdoor installations.
These extra-long masonry anchor bolts are well-suited for concrete wall mounting in garages and basements, securing fence posts and pergola hardware to block foundations, and fastening electrical conduit, pipe brackets, or HVAC equipment to concrete ceilings and floors — all scenarios where a standard short anchor simply won't reach.
| Product Type | Sleeve Expansion Anchor Bolt |
|---|---|
| Thread Standard | Metric ISO Coarse (M6 / M8 / M10 / M12 / M14 / M16) |
| Thread Diameter Range | M6 (6mm / ≈1/4") — M16 (16mm / ≈5/8") |
| Length Range | 50mm (≈2") — 200mm (≈7.9") |
| Material | Carbon steel with zinc or galvanized protective finish |
| Finish / Coating | See variant options — Contact us to confirm |
| Drive Style | See variant options (typically hex head or hex nut driven) |
| Compatible Base Materials | Solid concrete, brick, concrete block (CMU) |
| Required Drill Bit | Carbide-tipped masonry bit matching anchor outer diameter |
| Pack Quantity | 1 / 2 / 5 / 10 pieces (select above) |
| Country of Origin | Contact us to confirm |
A general rule: the anchor should embed at least 1 inch (25mm) into the base material beyond the fixture thickness. For example, if you're fastening a 20mm bracket into concrete, choose a bolt with at least 45–50mm of embedment depth. Our range covers 50mm (≈2") up to 200mm (≈7.9") to handle most residential and light commercial applications.
Load capacity depends on the bolt diameter, embedment depth, and the strength of the base material. Generally, M6 anchors are suited for lighter loads such as shelving and conduit clips, while M12–M16 anchors can typically handle structural brackets and heavy equipment mounts. Always consult a structural engineer for safety-critical applications.
These expansion anchors are generally made from zinc-plated or galvanized carbon steel, which provides moderate corrosion resistance for covered outdoor use. For fully exposed or marine environments, stainless steel anchors are typically recommended. Contact us to confirm the finish on your specific variant before ordering for outdoor applications.
These are metric-threaded anchor bolts (M6, M8, M10, M12, M14, M16) following ISO metric coarse thread standards. They are not compatible with UNC/UNF imperial thread nuts or bolts. If your fixture uses imperial threads, you'll need an adapter or a different anchor type.
These sleeve-style expansion anchors are designed for solid concrete, brick, and concrete block (CMU). They are generally not recommended for hollow block, drywall, or soft materials where the expansion mechanism cannot grip properly. In hollow materials, a toggle bolt or hollow-wall anchor is typically a better choice.
Yes. You'll need a carbide-tipped masonry drill bit that matches the anchor's outer diameter. For example, an M8 expansion anchor typically requires an 8mm masonry bit. Use a hammer drill for best results in concrete or brick — a standard rotary drill will work in softer brick but will be significantly slower.
Expansion anchors are generally designed for single-use installation. Once the sleeve has expanded inside the base material, removing and reinstalling the bolt in the same hole typically reduces holding strength. For applications requiring future disassembly, consider a drop-in anchor or a sleeve anchor with a removable bolt component.
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
US$40
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