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HDC-C Class 4 Timber Construction Screws for Outdoor Structures
HDC-C Timber Construction Screws CL4
The HDC-C Class 4 timber construction screw is designed for outdoor decks, pergolas and other exposed timber structures. Built for harsh Australian conditions, these screws combine structural strength with enhanced corrosion resistance, ensuring durability and long-term performance.
Available as a 6mm, 8mm and 10mm gauge screws, in lengths from 80mm to 320mm you can achieve most connections with the same screw. They are perfect for many types of timbers including solid woods, LVL, CLT, glulam and treated pine used in landscape and general construction.
Countersunk Torx driven head ensures a reliable install every time with a flush finish, essential when installing adjacent connectors such as joist hangers.
Availability:
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Description
Key Features:
- Class 4 galvanised coating for outdoor corrosion protection
- Countersunk head for a flush, clean finish
- Deep threads for strong grip in treated timber, hardwood, and LVL
- High torsional strength for use in structural framing
- Quick installation with T40 Torx drive
- Load rated ETA structural timber screws
Typical Applications:
- Deck framing and bearers
- Pergolas, verandas and carports
- Exterior timber walls and framing
- Fencing and garden structures
TECHNICAL INFO
- Drill Capacity: Solid timber, glue laminated timber, laminated veneer lumber, glued solid timbers, cross-laminated timber, plywood, particleboard, fibreboards and cement bonded particle boards.
- Driver Type: Torx drive
- Head Type: Countersunk ribbed
- Point Type: Type 17 milled point
- Material: Carbon Steel
- Finish: class 4 galvanised 8um
Why Choose HDC-C Class 4:
This screw is built to withstand outdoor conditions, providing secure, long-lasting joints in treated timber and hardwood. Trades and builders benefit from faster installation and the confidence that their structural fixings are corrosion-resistant and strong.
Product List
| SKU | Description | Availability | List Price | Pack |
|---|---|---|---|---|
| Pack: | ||||
More Information
| Delivery | SHIPS IN 1 - 2 DAYS |
|---|---|
| Coating & Plating | Class 4 (Mech. Gal) |
| Material Grade | Carbon Steel |
| Head Type | Countersunk |
| Driver Type | Torx Bit |
| Diameter / Gauge | M6, M8, M10 |
| Point Type | Type 17 (T17) Miled Point |
| For use with | CLT (Cross Laminted Timber), Hardwood, Timber, Treated Pine |
Technical Information
| SKU | Select Size | Torx Bit | Max. Fix. | Item |
|---|---|---|---|---|
| 1218.0060080 | M6 x 80mm HDC-C / T30 | T30 | 30mm | M6 x 80mm HDC-C |
| 1218.0060100 | M6 x 100mm HDC-C / T30 | T30 | 40mm | M6 x 100mm HDC-C |
| 1218.0060120 | M6 x 120mm HDC-C / T30 | T30 | 50mm | M6 x 120mm HDC-C |
| 1218.0060140 | M6 x 140mm HDC-C / T30 | T30 | 70mm | M6 x 140mm HDC-C |
| 1218.0060160 | M6 x 160mm HDC-C / T30 | T30 | 70mm | M6 x 160mm HDC-C |
| 1218.0060200 | M6 x 200mm HDC-C / T30 | T30 | 130mm | M6 x 200mm HDC-C |
| 1218.0080120 | M8 x 120mm HDC-C / T40 | T40 | 40mm | M8 x 120mm HDC-C |
| 1218.0080140 | M8 x 140mm HDC-C / T40 | T40 | 60mm | M8 x 140mm HDC-C |
| 1218.0080160 | M8 x 160mm HDC-C / T40 | T40 | 80mm | M8 x 160mm HDC-C |
| 1218.0080180 | M8 x 180mm HDC-C / T40 | T40 | 100mm | M8 x 180mm HDC-C |
| 1218.0080200 | M8 x 200mm HDC-C / T40 | T40 | 120mm | M8 x 200mm HDC-C |
| 1218.0080220 | M8 x 220mm HDC-C / T40 | T40 | 140mm | M8 x 220mm HDC-C |
| 1218.0080240 | M8 x 240mm HDC-C / T40 | T40 | 160mm | M8 x 240mm HDC-C |
| 1218.0080260 | M8 x 260mm HDC-C / T40 | T40 | 180mm | M8 x 260mm HDC-C |
| 1218.0080280 | M8 x 280mm HDC-C / T40 | T40 | 200mm | M8 x 280mm HDC-C |
| 1218.0080300 | M8 x 300mm HDC-C / T40 | T40 | 220mm | M8 x 300mm HDC-C |
| 1218.0100120 | M10 x 120mm HDC-C / T40 | T40 | 40mm | M10 x 120mm HDC-C |
| 1218.0100140 | M10 x 140mm HDC-C / T40 | T40 | 60mm | M10 x 140mm HDC-C |
| 1218.0100160 | M10 x 160mm HDC-C / T40 | T40 | 80mm | M10 x 160mm HDC-C |
| 1218.0100180 | M10 x 180mm HDC-C / T40 | T40 | 100mm | M10 x 180mm HDC-C |
| 1218.0100200 | M10 x 200mm HDC-C / T40 | T40 | 120mm | M10 x 200mm HDC-C |
| 1218.0100220 | M10 x 220mm HDC-C / T40 | T40 | 140mm | M10 x 220mm HDC-C |
| 1218.0100240 | M10 x 240mm HDC-C / T40 | T40 | 160mm | M10 x 240mm HDC-C |
| 1218.0100260 | M10 x 260mm HDC-C / T40 | T40 | 180mm | M10 x 260mm HDC-C |
| 1218.0100280 | M10 x 280mm HDC-C / T40 | T40 | 200mm | M10 x 280mm HDC-C |
| 1218.0100300 | M10 x 300mm HDC-C / T40 | T40 | 220mm | M10 x 300mm HDC-C |
| 1218.0100320 | M10 x 320mm HDC-C / T40 | T40 | 240mm | M10 x 320mm HDC-C |
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