Hex Head Wood Screws
Product Overview
This product is an Australian Standard T17 cutting-point hexagon flange self-tapping screw, specification 12-11×25, manufactured from heat-treated carbon steel substrate with a CL4 high-durability anti-corrosion coating. Designed for metal sheet and timber structure connections, it features an integrated waterproof flange head and T17 wood-cutting point, with coarse threads offering strong load-bearing capacity to meet the fastening requirements of outdoor corrosive environments such as high-humidity and coastal areas.
Product Applications
Roofing and wall construction: Fixing color-coated steel sheets and metal wall panels to timber purlins and timber joists;
Outdoor preservative-treated timber projects: Fastening for decks, trellises, fences, pergolas, and other exposed timber structures;
High-corrosion special scenarios: Coastal buildings, poolside areas, and industrial zone timber accessory components;
Light-gauge steel–timber composite buildings: Installation of decorative metal panels, light-gauge steel sheathing, and splicing assemblies with timber battens and plywood.
Product Features
T17 cutting point prevents wood splitting: Built-in chip evacuation grooves eliminate the need for pre-drilling in softwood, hardwood, and preservative-treated timber; coarse threads provide secure grip with excellent pull-out and shear resistance.
One-piece hexagon flange waterproof head: Compatible with socket power tools for efficient installation; the widened flange evenly distributes pressure while providing compression sealing and waterproofing effects.
CL4 high-durability anti-corrosion coating: Multi-layer composite anti-corrosion system resists salt spray, acid rain, and timber acidic corrosion, ensuring long-term outdoor performance without rusting or staining the surface.
12g heavy-duty coarse thread specification: Large thread outer diameter delivers superior load-bearing performance; the 25mm length is ideal for securing thin steel sheets to 20mm internal timber joists in assembly applications.
| Material | Carbon steel |
| Surface treatment | Mechanical galvanizing class 4 |
| Head type | Hexagon head |
| Slot type | External hexagon |
| Thread type | Full thread |
| Screw diameter | Approx. 5.5mm |
| Screw length | 25mm |
| Screw type | Wood screw |
| Corrosion resistance | High (suitable for highly corrosive scenarios such as coastal areas, industrial zones, swimming pool surroundings, and high-temperature, high-humidity outdoor environments) |
| Applicable tools | Wrench or power tools |

+86 15856352820

malingfei@linghongscrew.com

No. 56, Baishizhan Road, Economic Development Zone, Langxi County, Xuancheng City, Anhui Province, China
