Unreinforced Frames

Reliable Fixings for Unreinforced Frames and Window Hardware

The right screw can make a significant difference when fitting window hardware to an unreinforced profile. Head shape, thread diameter and length all need to suit the component being fitted and the fixing depth required.

This collection brings together a focused selection of window screws designed primarily for window fabrication and unreinforced frame fixing. The range includes options for friction stays and other window hardware, giving fabricators and installers a practical choice of sizes and head styles for different fixing requirements.

All screws in this collection are manufactured from A2-304 austenitic stainless steel and feature a single-thread design with a gimlet tip.

Choose Your Screw by Head Type

Head profile affects how the fixing sits against the hardware or frame. Rather than using one screw for every job, choose the head style that matches the fitting and installation requirements.

4.3mm and 4.8mm Window Screws

Two main thread diameters are available across the collection: 4.3mm and 4.8mm. Each diameter is offered in selected head profiles and lengths, allowing the fixing to be matched more closely to the hardware and frame.

Available lengths across the collection include 16mm, 20mm, 25mm, 30mm, 35mm and 40mm. Not every diameter and head type is available in every length, so check the individual product before ordering.

Choosing the Correct Screw for the Job

Start with the component being fitted. A friction stay, hinge or other piece of window hardware may require a particular head profile so that the fixing sits correctly once installed.

Next, check the required thread diameter and fixing depth. A longer or wider screw is not automatically the better choice. The fixing needs to match the window system, hardware and installation specification.

Where a manufacturer provides fixing guidance for the window system or hardware, follow those recommendations when selecting the final screw size.

Thread, Point and Drive Design

The screws in this range feature a single-thread design and gimlet tip. Combined with the available head profiles and diameters, these features provide a range of fixing options for professional window fabrication and installation work.

Because specifications vary between products, always check the diameter, overall length and head type before selecting a screw for a particular fitting.

Window Screws for Fabrication and Fixing

If you are looking for window screws for unreinforced frames, this collection allows you to compare the available sizes and head profiles in one place.

For general sheet metal or metal-to-metal work, a dedicated self-tapping screw may be more appropriate. Browse our stainless steel self tapping metal screws for products intended for those fixing requirements.

Need Screws for Timber or Decking?

Different materials require different fixing designs. The screws on this page are primarily intended for window fabrication and unreinforced frame applications, so they should not be treated as a universal fixing for every project.

If you are working on decking, outdoor timber or suitable composite boards, explore our decking and timber screws . This is the more relevant range for projects requiring composite wood deck screws and other dedicated decking fixings.