Friction Stay Window Screws Shallow Pan Countersunk Zinc PH2 (Pack of 100)

Frustrated by window friction stays binding or catching on screw heads after installation? Mounting friction hinges to PVCu sashes requires a fixing with a low-profile head height that sits perfectly within the track channel without snagging moving components. Standard countersunk or pan head screws are often too deep or too tall, causing the slider mechanism to jam. These 4.3 x 20mm Shallow Pan Countersunk Screws solve this exact issue. Featuring a specialized hybrid head profile, sharp gimlet tip, and deep single thread, they secure friction stays tightly to unreinforced frames while keeping track channels clear for smooth window operation.

Specialized Shallow Pan Countersunk Head

Standard pan head screws protrude too high and block friction stay track sliders, while standard deep countersunk screws can deform thin hinge metal. The shallow pan countersunk profile combines a flat, low-profile top with a shallow angled shoulder. This fits neatly into friction stay countersunk mounting holes, sitting completely flush within the track channel to guarantee smooth, unhindered sash movement.

Fast-Biting Gimlet Point

Screws sliding across slick PVCu profiles cause misaligned hinges and scratched frames. The sharp gimlet tip pierces unreinforced PVCu instantly upon contact, eliminating the need for pre-drilling while ensuring accurate hardware positioning.

Deep High-Grip Single Thread

Frequent window opening and wind loading place high pull out stress on friction stay fixings in hollow plastic profiles. The fully-threaded single thread cuts deeply into unreinforced PVCu chamber walls, delivering exceptional clamp load and long-term resistance to stripping.

PH2 Drive & Zinc Finish

Slipping driver bits damage surrounding window sashes during high-speed installation. The deep PH2 Phillips recess provides positive bit engagement for fast, slip-free driving, while the zinc-plated carbon steel construction (Corrosion Rating 2) offers dependable protection in indoor and sheltered domestic settings.

Key Features

• Purpose-designed for securing friction stay hinges to PVCu window profiles.
• 4.3 x 20mm size fits standard window hardware mounting dimensions.
• Shallow pan countersunk head profile prevents track obstruction and hardware jamming.
• Sharp gimlet point tip enables rapid starting without pre-drilling.
• Full single thread offers maximum thread engagement in unreinforced plastic.
• Standard PH2 Phillips recess minimizes driver bit cam-out.
• Zinc-plated carbon steel construction (Corrosion Rating 2).