| Item | Specification Details |
|---|---|
| Product Name | Sleeve Expansion Anchor Bolt |
| Alias | Tube Expansion Bolt, External Wall Anchor, Ceiling Sleeve Anchor, Cross Recessed Expansion Screw |
| Material | Q235 Carbon Steel |
| Surface Finish | Blue White Zinc Plated Anti-rust Coating |
| Standard Sizes | M6, M8, M10, M12, Custom total length for different wall thickness |
| Execution Standard | Construction Masonry & Concrete Fastener Standard |
| Custom Service | OEM & ODM, Custom bolt diameter, sleeve length, total rod length, cross head size |
| Core Features | Full-length expansion metal sleeve, cross recessed countersunk head, uniform expansion force, stable fixation in concrete, brick, hollow block walls |
| Application Scenarios | Pipeline bracket fixing, ceiling pipe hanger installation, air conditioner bracket mounting, household decoration wall fixtures, fire pipe support anchoring, mechanical equipment base fixing |
Sleeve Expansion Anchor Bolt
The sleeve expansion anchor bolt is a widely used heavy-duty masonry fastener, specially designed for fixed installation on concrete, red brick, aerated block and other wall substrates in construction and decoration projects.
It consists of a threaded bolt, expandable metal sleeve and cross recessed countersunk head. When tightening the bolt, the conical end pulls into the sleeve to push the sleeve wall outward, forming tight friction locking with the hole wall, providing strong pull-out and shear resistance. The cross recessed head matches standard cross screwdrivers for convenient on-site installation.
The whole product is treated with blue-white zinc plating to form a compact anti-rust layer, effectively resisting indoor and outdoor moisture erosion to avoid rust failure of concealed fasteners. The integrated long sleeve design distributes expansion pressure evenly, reducing wall cracking risks during installation compared to short expansion anchors.
Complete size series covers light and heavy load fixing demands: small specifications for pipe clamps and light brackets, large diameter long-length models for air-conditioning supports, fire pipeline hangers and mechanical equipment bases.
We support customized sleeve lengths and bolt diameters to adapt to different wall thicknesses and load weights. All finished expansion anchors pass pull-out load test and salt spray anti-corrosion inspection before delivery, meeting the safety fixing requirements of building pipeline and hardware installation projects.
