Chipboard screws

Chipboard Screws

General

Chipboard screws,also called speedscrews or particle board screws,are specially developed to prevent the problems arising with the application of the conventional woodscrews in chipboard and different types of wood.Chipboard screws have many technical improvements which ensure easy,and with modern tools,fast assembly,so saving on total costs.

Properties

The benefits are achieved by the following properties:adapted geometry of the thread,the thread angle of the wood thread has been diminished from 60 to 40.

Advantages

With the same major diameter the minor diameter is smaller and of equal thickness over the full screwlength (except the point).The normal length chipboard screws have thead,till just under the head.Depending on availability can be supplied fully threaded as well as partly threaded.A sharp selfcentering point,through which easier start of drilling and less risk of wobbling.Expensive and time-consuming pre-drilling is often unnecessary.The sharper and deeper profile of the thread does not push aside the material,but cuts into it.Less risk of crumbling and splitting of small,crosscut sides e.g.with the installation of door and window furniture.Besides this a better grip(up to 35% higher pull-out values)and up to 40% lower installation torque.

Material

Chipboard screws are made of casehardened steel and surface-hardened.They are stronger and more wear resistant than woodscrews,increasing the cutting performance and preventing damage during installation.A toughened core avoids breaking of screw head at bending.

Assembly

Chipboard screws are provided with a special corrosion resistant lubricant causing a decrease of the installation torque.

Recess

Although chipboard screws are available from stock in the slotted condition,for industrial use screws with a Pozidriv(Z) cross recess are preferred,which can be efficiently tightened with automatic setting tools.