How to Select the Right Expansion Bolts for Different Wall Types

Expansion bolts are indispensable mechanical fasteners in home renovation and construction projects. They do not require pre-embedded components and rely on a physical expansion mechanism to securely anchor into wall substrates. Thanks to their ease of installation, stable load-bearing capacity, and high cost-effectiveness, they are widely used for fixing items to various wall types, including concrete, masonry, and lightweight panels. They are suitable for everything from small decorative hangers to large equipment brackets.

As a professional manufacturer with years of experience in the fastener industry, Jiaxing Aoke specializes in the R&D, production, and export of various expansion bolts. Leveraging the heritage of our factory, which began operations in 1986, and our rigorous quality control system, we provide anchoring solutions suitable for all scenarios to customers worldwide.

The core components of an expansion bolt consist of a screw rod, a conical expansion core, an expansion sleeve, a nut, and a washer. Its operating principle is based on the wedge angle: After inserting the bolt into a drilled hole, tightening the nut pulls the shank, causing the tapered expansion core at the rear to push into the sleeve. This forces the sleeve to expand radially, tightly compressing the hole walls. The result is a secure anchorage achieved through strong friction and interlocking force. Jiaxing Aoke’s product range covers three core categories: metal expansion bolts, hollow wall anchors, and plastic expansion sleeves. The entire series is ISO 9001 certified, offers a complete range of specifications, and supports custom non-standard designs to meet diverse global wall types and load-bearing requirements.

Solid Concrete Walls / Red Brick Load-Bearing Walls

With their solid texture and high load-bearing capacity, Jiaxing Aoke carbon steel galvanized or stainless steel metal expansion bolts are the preferred choice. Standard sizes range from M6 to M12, capable of securely mounting heavy objects such as air conditioner outdoor units, large shelving units, and door/window guardrails. Their tensile strength and stability have been professionally tested, ensuring they remain secure and do not loosen or fall off over long-term use.

Hollow Brick / Perforated Brick Walls

With numerous internal cavities, standard bolts can easily cause the wall to crack. Jiaxing Aoke’s specialized hollow-wall anchors are the preferred choice. They feature a large load-bearing surface that conforms to the structure of hollow walls, effectively preventing wall damage while ensuring anchoring strength and safety.

Drywall / Lightweight Partition Walls

These walls are thin and lightweight with low load-bearing capacity, making them suitable only for hanging light items such as decorative artwork and small light fixtures. Use Jiaxing Aoke butterfly anchors. Never hang heavy objects to prevent wall damage or detachment.

Tile / Stone Walls

These materials are brittle and hard, making them prone to chipping and cracking when drilled. We recommend Jiaxing Aoke plastic expansion sleeves (made of nylon PA66) paired with stainless steel screws, which are specifically designed for brittle substrates. Use them only for installing small items to prevent wall cracking.

As a professional fastener supplier, Jiaxing Aoke has become a reliable choice for wall anchoring among global customers, thanks to our core strengths of a comprehensive product range, high quality, and fast delivery.