1 / 4
Best China Heavy-Duty Fish Scale Expansion Bolt - High-Stability Fasteners from Reliable Suppliers and Factory Manufacturer, Manufacturers
Product Description
Product Application
Widely used for ceiling suspension, pipeline bracket fixing, shelf installation, curtain wall keel and lightweight wall fastening in construction engineering and interior decoration.
Specifically designed for hollow bricks, porous bricks, aerated concrete blocks and other lightweight wall bases, solving the problem of easy slipping of ordinary expansion bolts.
Suitable for indoor and outdoor building fixing scenarios, providing reliable support for hanging objects, mechanical equipment accessories and decorative components.
Ideal for engineering renovation, home decoration and equipment maintenance, adapting to various thin-walled and porous base environments with poor fastening conditions.
Compatible with standard threaded rods and installation tools, meeting the fastening needs of construction sites and decoration projects with high stability requirements.
Material & Processing Features
Manufactured from high-grade carbon steel with quenching treatment, featuring high hardness, strong tensile strength and good toughness, not easy to break under load.
Unique fish scale anti-slip texture on the expansion sleeve, enhances friction with the base, effectively prevents backward slipping and improves fastening stability.
Precision stamping and integrated molding process, uniform expansion sleeve thickness, strict dimensional tolerance control, ensuring consistent expansion effect.
Standard hexagonal head design fits common wrenches, labor-saving installation, smooth and neat threads for tight fitting with nuts.
Surface galvanized anti-rust treatment improves corrosion resistance, suitable for humid indoor and general outdoor environments, prolonging service life.
Core Product Benefits
Fish scale anti-slip design greatly enhances the gripping force on lightweight walls, effectively disperses stress, avoids falling off and ensures construction safety.
Strong adaptability to special bases, solves the fastening difficulty of hollow and porous walls, and expands the application scope of expansion bolts.
High-strength structure delivers excellent load-bearing performance, resists vibration and loosening, maintaining long-term stable fastening.
Simple installation process, no complex operation required, suitable for on-site construction, improving overall project efficiency.
Complete specifications with various diameters and lengths, supporting customized processing to match different wall thicknesses and load-bearing needs.
Comply with international building fastener standards, passing tensile test and load test, with stable quality and cost-effective performance.
Detail Pictures
Frequently Asked Questions
What makes fish scale expansion bolts different from standard bolts?
The unique fish scale texture on the expansion sleeve provides significantly higher friction, preventing the bolt from slipping or rotating in hollow or porous materials.
Are these bolts suitable for hollow brick walls?
Yes, they are specifically engineered for lightweight bases like hollow bricks, aerated concrete, and porous blocks where standard bolts often fail.
What material are these bolts made of?
They are manufactured from high-grade carbon steel that undergoes a quenching process for superior hardness and tensile strength.
Do they offer rust protection for outdoor use?
Yes, the surface is treated with a galvanized anti-rust coating, making them suitable for humid indoor conditions and general outdoor environments.
Are there different sizes available?
We offer a complete range of specifications with various diameters and lengths, and we also support customized processing for specific project needs.
How do I ensure a secure installation?
The standard hexagonal head allows for easy tightening with common wrenches. Ensure the hole diameter matches the bolt specification for optimal expansion.
