Timco 3.9 x 16mm Friction Stay Window Screws Self-Drilling Shallow Pan 125Z (Box of 1000)

The Perfect Fit for Window Hinges

When attaching friction stays (window hinges), using standard countersunk screws can be a costly mistake. Standard countersunk heads are often too deep for the thin metal brackets, causing the screw head to protrude. When the window is closed, these protruding heads scrape against the opposing frame or prevent the hinge from closing completely. TIMCO solved this by engineering a "Shallow Pan Countersunk" head. It is specifically profiled to drop perfectly into the shallow recesses of friction stays, sitting completely flush so your hardware operates smoothly and silently.

Effortless Fastening into Reinforced Frames

Modern PVCu window frames rely on internal steel or aluminium reinforcements for structural integrity. However, attaching hardware to these metal cores can severely slow down your assembly line if you have to pre-drill every single hole. Outfitted with a highly effective self-drilling point, this screw completely bypasses that step. It features a Maximum Drilling Thickness (MDT) of 2.5mm, allowing you to drive the fastener straight through the PVCu outer layer and directly into the metal core in one fluid motion, saving valuable seconds on every fixing.

Reliable TIMCO Quality

Manufactured from high-strength carbon steel, these self-drilling screws are built to handle the rigorous torque of impact drivers and automated fabrication machinery. They are finished in a bright zinc coating, giving them a Corrosion Rating of 2. This makes them highly resilient for use in the sheltered, occasionally damp environments typical of window rebates. Packaged in a robust box of 1000 pieces, they provide the consistent quality, dimensional accuracy, and volume that professional window fabricators demand.

Key Features

• Self-Drilling Tip: Acts as a built-in drill bit, slicing through plastic profiles and metal cores in a single motion to drastically reduce installation time.
• Fully Threaded: Self-tapping threads run the entire length of the 16mm shank, providing maximum grip and pull-out resistance inside the reinforced frame.
• Phillips (PH2) Drive: The deep cross-recess ensures positive bit engagement, preventing slippage (cam-out) during high-speed, high-torque installations.
• Shallow Pan Countersunk Head: Custom-profiled to drop neatly into the shallow countersunk holes found on metal friction stays and window hardware.
• Zinc Finish: Provides a Corrosion Rating of 2, making it perfectly suited for occasionally damp, rural, and sheltered environments like internal window rebates.
• Carbon Steel Construction: Hardened to withstand the high torque required to pierce metal substrates without shearing.