| Item | Specification |
|---|---|
| Material | Carbon Steel, Stainless Steel (SS304/SS316) |
| Diameter Range | M6 – M20 |
| Length Range | 40mm – 200mm |
| Head Type | Hex Head, Flat Head, Round Head, Countersunk |
| Thread Type | Metric / UNC |
| Grade | 4.8, 8.8, A2-70, A4-80 |
| Standard | DIN, ISO, ANSI, ASTM |
| Surface Finish | Zinc Plated, Hot Dip Galvanized, Stainless Steel Polished |
| Packing | Bulk, Small Box, Carton + Pallet, Customized |
Hollow Wall Anchor
Hollow Wall Anchor, also known as hollow gecko, is a dedicated expansion fastener developed for various hollow thin-wall substrates, solving the low load-bearing problem of common plugs on hollow boards.
This product consists of cross countersunk bolt and four-way folding expansion wings. Push the folded anchor through the pre-drilled hole into the hollow cavity behind the wall, then tighten the bolt. The four metal wings will expand and flatten against the inner surface of the board to form a large-area stress-bearing surface, providing excellent tensile and shear resistance.
The whole carbon steel body adopts zinc plating anti-rust treatment, effectively preventing rust erosion caused by indoor damp environment. The integrated structure requires no extra matching accessories, making installation quick and convenient.
Unlike ordinary expansion anchors that only work on solid walls, hollow wall anchor is specially adapted to fragile hollow substrates. The uniform bearing force will not crack thin gypsum boards or hollow bricks, ideal for light to medium load fixing of household and commercial decorative fittings.
Custom screw lengths and wing specifications are supported to fit different board thicknesses. All finished hollow wall anchors pass pull-out load durability test before delivery, fully meeting safety fixing standards for interior decoration and electrical installation engineering.


