Pozi Countersunk Wood Screws 3.5mm (Qty 100)
The Pozi-drive was invented to further improve on the torque and cam-out of the Phillips head. To do this there was a second cross added to the first cross. This not only helped when distinguishing between the two head types but also further improved the contact of the driver to the screw. A different screwdriver is needed for use with each screw. The new screwdriver for use with a Pozi-drive screw has a blunt point rather than a sharp point and the angle of the blades are sharper by 45 degrees. The driver doesn’t have rounded corners as the Phillips driver has. The design was patented in the 1960s by the American Screw Company and the Phillips Screw Company as a joint venture and the name is thought to have come from an abbreviation of “Positive Drive”.
One of the most common problems with the screws are that to the untrained eye both recesses look the same. A Phillips Driver will fit into a Pozi screw head but a Pozi driver will not fit into the Phillips screw head, it is not recommended to use a Phillips driver with a Pozi screw as it will eventually round off the recess of the head causing damage to the screw and making it unusable.
WHAT’S INCLUDED
Pozi Countersunk Wood Screws 3.5mm (Qty 100)
KEY FEATURES
A2 Stainless Steel (also known as 18-8 or 304 Stainless Steel)
thread size (T): 3.5mm (No. 6)
length (L): 15mm, 30mm, 40mm