HDC-P Timber Construction Screws CL4

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HDC-P Timber Construction Screws CL4

The Allfasteners HDC-P Class 4 landscape screw is the ideal solution for outdoor landscaping and structural timber projects where standard 18G screws cannot provide sufficient strength. Available in M8 and M10 diameters, the HDC-P outperforms competitor 18-gauge screws, offering higher shear strength, deeper threads, and improved load-bearing performance.

HDC-P screws are a large gauge screw for timber-to-timber structural connections. They provide a strong secure connection through the large washer head and aggressive serrated threads. Torx drive ensure positive engagement for reliable driving and shank clearing threads improve drawing strength.

An alternative to bolting timber, or using coach screws, HDC-P screws are faster and stronger than the equivalent batten screw.

The ideal solution for timber connections, load rated ETA screws for laminated timbers, treated pine and solid timber.

SKU 3WKCPC4

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Grouped product items
Product Name	Qty
M6 x 50mm HDC-P Timber Construction Screws CL4 T30 Pan Hd. From $21.25
M6 x 70mm HDC-P Timber Construction Screws CL4 T30 Pan Hd. From $27.40
M6 x 100mm HDC-P Timber Construction Screws CL4 T30 Pan Hd. From $19.05
M8 x 80mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $37.03
M8 x 100mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $37.25
M8 x 120mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $47.45
M8 x 140mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $56.88
M8 x 160mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $72.90
M8 x 180mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $83.80
M8 x 200mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $106.88
M8 x 220mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $132.95
M8 x 240mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $155.03
M8 x 260mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $172.38
M8 x 280mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $199.95
M8 x 300mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $225.58
M10 x 120mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $77.58
M10 x 140mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $92.95
M10 x 160mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $119.10
M10 x 180mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $136.98
M10 x 200mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $174.73
M10 x 220mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $91.45
M10 x 240mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $105.09
M10 x 260mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $118.56
M10 x 280mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $137.60
M10 x 300mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $155.23
M10 x 340mm HDC-P Timber Construction Screws CL4 T40 Pan Hd. From $177.63

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Description

Key Features:

Pan head with flat underside for excellent timber clamping
M8–M10 diameters for structural load-bearing capacity
Class 4 galvanised corrosion protection for outdoor exposure
Deep-cut threads reduce splitting in hardwoods and treated timber
T40 Torx drive for faster installation with less cam-out ideal for driving long screws
Load rated ETA structural timber screws

Typical Applications:

Retaining walls and heavy landscape timber structures
Deck framing with large joists and bearers
Pergolas and large outdoor timber frames
Sleepers, posts, and structural outdoor timber connections

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: Pan washer head
Point Type: Type 17 milled point
Material: Carbon Steel
Finish: class 4 galvanised 8um
M6 Head Dia: 14mm
M8 Head Dia: 22mm
M10 Head Dia: 25mm

Why Choose HDC-P:

Compared to standard 18G landscape screws, the HDC-P offers superior strength, structural confidence, and size options, making it the trade-preferred choice for decks, pergolas, retaining walls, and other critical outdoor timber projects.

Product List

SKU	Description	Availability	List Price	Pack
				Pack:

More Information

More Information
Delivery	SHIPS IN 1 - 2 DAYS
Coating & Plating	Class 4 (Mech. Gal)
Material Grade	Carbon Steel
Head Type	Pan
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.
1217.0060050	M6 x 50mm HDC-P / T30	T30	20mm
1217.0060070	M6 x 70mm HDC-P / T30	T30	30mm
1217.0060100	M6 x 100mm HDC-P / T30	T30	40mm
1217.0080080	M8 x 80mm HDC-P / T40	T40	30mm
1217.0080100	M8 x 100mm HDC-P / T40	T40	50mm
1217.0080120	M8 x 120mm HDC-P / T40	T40	40mm
1217.0080140	M8 x 140mm HDC-P / T40	T40	60mm
1217.0080160	M8 x 160mm HDC-P / T40	T40	80mm
1217.0080180	M8 x 180mm HDC-P / T40	T40	100mm
1217.0080200	M8 x 200mm HDC-P / T40	T40	120mm
1217.0080220	M8 x 220mm HDC-P / T40	T40	140mm
1217.0080240	M8 x 240mm HDC-P / T40	T40	160mm
1217.0080260	M8 x 260mm HDC-P / T40	T40	180mm
1217.0080280	M8 x 280mm HDC-P / T40	T40	200mm
1217.0080300	M8 x 300mm HDC-P / T40	T40	220mm
1217.0100120	M10 x 120mm HDC-P / T40	T40	40mm
1217.0100140	M10 x 140mm HDC-P / T40	T40	60mm
1217.0100160	M10 x 160mm HDC-P / T40	T40	80mm
1217.0100180	M10 x 180mm HDC-P / T40	T40	100mm
1217.0100200	M10 x 200mm HDC-P / T40	T40	120mm
1217.0100220	M10 x 220mm HDC-P / T40	T40	140mm
1217.0100240	M10 x 240mm HDC-P / T40	T40	160mm
1217.0100260	M10 x 260mm HDC-P / T40	T40	180mm
1217.0100280	M10 x 280mm HDC-P / T40	T40	200mm
1217.0100300	M10 x 300mm HDC-P / T40	T40	220mm
1217.0100340	M10 x 340mm HDC-P / T40	T40	240mm