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Forgefix Drywall Screw Phillips Bugle Head SCT Black Phosp 3.5 x 42mm Box 200

 

The Phillips screw has four simple tapered slots. It is designed so that a Phillips tip screwdriver can turn a Phillips screw with increasing torque. When the torque gets to be too strong for the tip then the screwdriver tip winds itself out of the screw thus preventing over-tightening and or damage to the screw head.

Coarse thread screws (mainly drywall screws) have an extremely sharp point and are designed to penetrate plasterboard skin. The coarse thread eases in to the board then the timber baton holding the board firm.

Drywall Screw Phillips Bugle Head SCT Black Phosphate 3.5 x 42mm Box 200