This zinc-plated countersunk screw is designed for window fabrication tasks involving steel or aluminium reinforcements. The 3.9 x 25mm size is suited to securing hardware components to reinforced frames during installation or repair jobs.
Supplied in a box of 1000, the screw features a PH (Phillips) drive and a self-drilling point, removing the need for pre-drilling in most applications. Commonly used by window installers and fabricators, it supports efficient fixing of handles, hinges, or other fittings to metal-reinforced uPVC or aluminium window profiles.
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