Our uPVC screws are made for fitting hardware to plastic uPVC (also written PVC-U) windows and doors. This is the specialist range fabricators reach for when fixing hinges, locks, keeps, handles and cills to uPVC frames, whether the frame is unreinforced or has a steel or aluminium reinforcement inside.

Which uPVC screw for which frame

• Unreinforced uPVC: high-low thread screws cut their own path in soft plastic and hold tight. The ribbed versions cut a clean recess under the head, so the countersunk head pulls flush without cracking the plastic.
• Reinforced uPVC (steel or aluminium inside): self-drilling screws cut through the reinforcement with no pre-drilling. Choose countersunk for a flush finish, or pan head to clamp steel hardware down.
• Friction stays: shallow pan head and countersunk friction stay screws fix the hinges that hold a casement window open.
• Cills: bugle head self-drilling cill screws fix window and door cills to uPVC and aluminium frames.

Finishes include silver zinc, gold ZYP to match gold hardware, and A2 stainless for coastal and exposed work.

Screws for uPVC doors, handles and hinges

The same screws work on uPVC doors. Use the high-low thread countersunk screws to fit hinges, locks, keeps and handles to unreinforced door frames, and the self-drilling screws where the frame has steel or aluminium reinforcement. Cill screws fix door cills as well as window cills. Check the screw length and gauge against the hardware you are fitting.

FAQs

Can you screw into uPVC window frames?
Yes. Unreinforced uPVC is soft, so a high-low thread screw cuts its own path and holds tight. Where there is steel or aluminium reinforcement inside, use a self-drilling screw, which cuts through it without pre-drilling.

What screws do you use for uPVC door handles and hinges?
High-low thread uPVC screws suit hinges, locks, keeps and handles on unreinforced frames. Use self-drilling screws where the frame is reinforced.

Are self-tapping screws suitable for uPVC?
uPVC fabrication screws are self-tapping: the high-low thread cuts its own path in soft plastic. For reinforced frames, self-drilling screws cut through the metal first.

New to window fixings? Our screw sizes and types guide explains heads, drives and finishes. Supplied by Stick2 Products at UK trade prices, backed by TIMCO quality.