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ROBERTSON 75mm Square Nose 374MULTI ANGLE CUTTING BOARD ST90K

Wood Building Screws

( MEGA )

Mega



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Applications

This screw is commonly used for:
• Fixing of roof insulation
• Roof construction
• Rafter fixing
• Balcony construction
• Winter garden construction

• Wooden gymnastic apparatus
• Stair construction
• Wood house construction
• Wooden frames construction
• Greenhouses construction
• Ffences construction
• Bridges construction

Advantages
The Hexagonalhead screw is mostly already replaced by the
Wood Building Screw (WBS) on the market.
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The screw:

• Reduced seismic resistance
• Not hardened
• Predrilling necessary
• Head left out of the surface.
If you must come "face to face" to the surface requires router the wood construction and installation of wheel.
• Working time for predrilling costs more than screw itself
• No German Certification

The big advantages of the Wood Building Screw are:
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• Transmission of high torque through TX - Recess
• Quick drill-in because of optimal angle of point
• Low drill-in torque
• Low radial force
• High pull out values because of 40° flank angle
Special grooves on the underside of the head for automatic routing without damaging the surface
• No predrilling necessary
• German Certification

Conclusion:
• Saving lot of working time, up to 10 times faster, because it is not necessary to predrill and change tooling
• New design of thread-geometry and special slide coating contributes to the good performance
• The better data of breaking torque and tensile strength allows a usage of smaller dimension compared to before, (before 0 10 => now 0 8 at same duty)

Production Control / Inspection
The specified quality of the product is controlled during the whole process of production- and transport. This is done with the necessary equipment and controlled testing- and measuring systems so that the required quality of each product will always be fully achieved.
All WBS - Chipboard Screws arriving at the customer have to correspond to the specification in all details. The packing has to be arranged in the correct condition, without defects in plating and appearance.
• Mechanical: Breaking Torque, Bending Angel
• Dimensions: Head diameter, outside diameter, core diameter,
length of thread, depth of recess.
Rough deviations of the tolerances, which might effect the function and the usage will be considered as major and allow a rejection.

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