<p>These Forgefix high-low thread Concrete Frame Screws are Zinc Yellow Passivated for increased resistance to corrosion. They offer a virtually stress free fixing, allowing close to edge applications. They are through-fixing, eliminating the need for marking and re-positioning when fixing batons etc. The Torx compatible head of the screw enables increased torque control.</p> <p>APPLICATION:</p> <p>Extremely popular fixing for window and door frames. Also now used as a versatile fixing for many applications in DIY, Joinery, Plumbing and Electrical trades.</p> <p>The Zinc Yellow Passivation process of electroplating is similar to the 'Galvanised' and 'Zinc Plated' processes but with the addition of a yellow dye. It offers an aesthetically pleasing finish, whilst having excellent resistance to corrosion.</p> <p>By design, Torx compatible head screws resist cam-out much better than Phillips or Slotted screws. Where Phillips heads were designed to cause the driver to cam out, to prevent over-tightening, Torx compatible heads were designed to prevent it and to achieve a desired torque consistently. Torx compatible head sizes are described using the capital letter 'T', followed by a number. A smaller number corresponds to a smaller point-to-point dimension of the screw head. Only the proper driver can drive a specific head size without risk of ruining the driver or screw.</p> <p>High-Low Thread screws have an excellent holding power in wood due to their alternating high and low thread heights.</p><p>Concrete Frame Screw Torx High-Low Thread ZYP 7.5 x 42mm Bag 10</p>
