Traditional wood screws have a blunt thread angle of 60° (displaces material, risk of splitting), have a thicker minor diameter thereby deforms the wood, so pre-drilling is recommended.
Chipboard screws can be used in chipboard and soft wood types without predrilling, due to its thin core diameter and sharp angle of the thread.
This sharp thread cuts into wood with lower splitting effects, while simultaneously reducing the insertion torque.
This combination increases the battery life on the used power tools and has the advantage of saving production time. The pull-out forces are also more consistent from the reduced splitting.
However, using chipboard screws in harder wood types is usually problematic because the friction and insertion torque is higher, which may result in the screws breaking.
Therefore EXPANDET has developed some special features and modifications to these screws to eliminate the limitations of the above designs and this improved range is described below.
Expandet Heco-Topix Wood Construction Screw
Expandet Heco-Topix wood construction screw is suitable for fixing of wood constructions, trusses, stairs, insolation on trusses etc. without pre-drilling.
Heco-Topix Screws are available in a gold colour.
- No pre-drilling.
- The special design prevents risk of cracking.
- The revolutionary point and shank geometry makes work quick and easy.
- Lower installation torque (moment) due to specially designed ribs.
Expandet Wood Construction Installation Screws
We also have Expandet Installation Screws available.
Expandet Drywall Screws ensures fast and effective installation, and are available in a wide range for both steel and timber substructures. Drywall Screws are CE-marked and optimized for professional use.
- Optimised for professional use.
- Wide range for steel and timber substructures.
- Fast and effective installation.
We are stocking specialised Extra Decking Screws from Denmark with a reduced countersunk head, milling ribs and fibre-cut.
Wooden decks usually consist of thin planks; being outdoors, they must endure harsh environmental conditions. This is where deck screws come in.
They are designed to resist corrosion, drive easily and lay smoothly against the deck surface.
As they anchor timber or composite deck boards to structural timber or joists, to ensure a good smooth working, these screws have a parallel shank, with a self drilling and countersink feature. This enables the screw to be fastened in a single operation doing away with the necessity of predrilling the deck boards.
Usually made from stainless steel or with a SS coating to prevent corrosion for outdoor use, its other special feature includes a high torque drive fitting such as hexagon, square and torx drives.
Produced in A4 (316) for outdoor use. Ideal for use in ACQ timber and other aggressive environment.
Expanded Facade Screw with a number of different coloured heads – natural, pearl, flint, sand, granite etc.
Available in 4.8×36
Used in load bearing timber structures making it very unique.
Has fibercut and saw thread => suitable for fast fixing into wood.
Special ceramic coating technology permits outdoor use.
Can be used in ACQ timber without fear of corrosion.
These screws use the torx drive for slip-less fixing.
Surface coated with Ceramic coating technology.
High resistance in ACQ timber.
Screw design ensures easy & quick installation.
Outdoor Screw V2 CSK/ Pan Torx available in Carbon Steel and Stainless Steel.