Baypole Screws – Wafer Flange – Self Drilling Point – Zinc

Zinc baypole screws are the go-to fixing for PVCu bay window fabrication. These wafer flange, self drilling screws are designed to pull sections together cleanly and hold them fast without the need for pre-drilling. The low-profile wafer head sits flush against the profile, keeping the joint neat and the finish tidy. If you’ve ever tried to use the wrong screw for a bay window and ended up with a raised head fouling the frame, you’ll know exactly why these exist.

The self drilling point bites straight into PVCu without skating around or causing the profile to crack. Combined with a zinc coating for corrosion resistance, these screws are built to perform in the kind of environment window fabricators actually work in. The A1 fire classification is worth noting too — useful where building regulations demand it and good reassurance even where they don’t.

Where Zinc Baypole Screws Get Used

The primary application is PVCu bay window fabrication, where sections need to be accurately joined and held in alignment. The wafer flange design is key here — standard pan or countersunk heads simply don’t suit the profile geometry of bay window joints the way a wafer head does. That said, these screws see plenty of use in other window and door fabrication work wherever a discreet, low-profile fixing is needed in PVCu sections.

Available in seven lengths from 4.8 x 40mm through to 4.8 x 100mm, sold in boxes of 200. Whether you’re working through a run of bay frames on a new build or replacing sections on a retrofit job, having the right length to hand saves time and keeps the work looking professional.