| Item | Details |
|---|---|
| Product Name | Flange Hex Head Lag Screw, Flange Hex Head Screw |
| Raw Material | Grade 4.8 carbon steel |
| Surface Treatment | Ruspert |
| Available Sizes | M6, M8, M10, M12, custom lengths supported |
| Structure | Integrated hex flange head, smooth middle shank, coarse wood tapping thread, sharp self-drilling tip |
| Suitable Workpieces | Solid timber, wooden beam, outdoor wood deck, garden lumber frame, wooden fence |
| Product Strengths | Built-in flange removes extra washers during installation; Ruspert coating delivers long anti-rust performance for outdoor use; Deep wood thread locks timber firmly with reliable pull resistance; Hex head fits standard hand wrenches without slipping; Hardened thread structure stays intact when driven into thick wood |
| Application Range | Outdoor wood deck assembly, garden furniture installation, timber support frame fixing, wooden guardrail mounting |
| Custom Service | Custom overall screw length, grey/white/black Ruspert coating optional, upgrade to SUS304 stainless steel, non-standard thread sizes available |
This flange hex head lag screw is a heavy-duty fastener for outdoor solid wood connection work.
It is made of Grade 4.8 carbon steel with Ruspert surface finish. Multi-layer composite protective film blocks moisture and salt mist erosion, providing better anti-corrosion ability than regular zinc plating. The integrated flange head saves separate washers, cutting down operation steps for construction workers.
The screw has smooth middle shank and deep coarse wood thread with sharp tip. It can be twisted into solid wood without pre-drilling holes and reduces wood splitting during installation. Thread teeth sink deep into wood grain to keep joints tight even under long-term outdoor pressure and temperature changes.
Different from small indoor furniture screws, this lag screw bears larger load for outdoor lumber projects. Every batch will pass salt spray, torsion and pull-out tests before shipment to meet general outdoor timber hardware standards. Buyers can order customized length and Ruspert coating color for mass production.
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