Jack Nut Screw Anchor With Machine Screw

Jack Nut Screw Anchor - When Extra Secure Fixing is Required

When you need a reliable fixing in thin materials or hollow panels, the Home Secure™ Jack Nut provides unbeatable grip and versatility.
This clever jack nut anchor expands behind the surface as the screw tightens, creating a strong, vibration-resistant hold — even in areas where standard screws or bolts can’t reach.

Ideal for uPVC, metal, composite, and sheet materials, the jack nut offers a secure, professional finish for both trade and DIY applications.

⚙️ Key Features

• 🔩 Strong Anchoring Power: Expanding body design creates a solid hold behind thin or hollow materials.

• 🧱 Versatile Use: Perfect for uPVC panels, metal sheets, composite materials, and light industrial fixings.

• 🔧 Complete Set: Includes both the jack nut anchor and matching machine screw for easy installation.

• 🪛 Vibration Resistant: Maintains grip under movement and stress — ideal for mechanical or structural use.

• 💪 High-Strength Material: Manufactured from durable zinc-plated steel for long-lasting corrosion resistance.

• 🧰 Easy to Fit: Simple tightening process — no special tools required.

🏠 Ideal For

• Installing fixings in uPVC doors and window frames

• Securing hardware to metal or composite panels

• Automotive, industrial, or sheet-metal repairs

• Anywhere a standard screw cannot anchor properly

📏 Technical Details

• Brand: Home Secure™

• Type: Jack Nut Screw Anchor with Machine Screw

• Material: Zinc-plated steel

• Finish: Bright zinc coating for corrosion resistance

• Installation: Manual tightening or power driver (no special tools needed)

• Use: Thin panels, uPVC, metal, composites, plastics

💬 FAQ

❓ What is a jack nut?

🔩 A jack nut is a type of expanding nut used to create a strong fixing in thin or hollow materials. As the screw tightens, the nut collapses and grips behind the surface, forming a secure anchor point.

When a uPVC frame has no steel re-enforcing there is nothing for a standard screw to grip on to. To check if your frame has steel re-enforcing you will need to drill into it and feel the tension or lack of. 

❓ What materials can a jack nut be used with?

🧱 Jack nuts are suitable for uPVC, sheet metal, composites, fibreglass, and other hollow or lightweight materials.

❓ How do you use a jack nut anchor?

When installing our jack nuts we recommend using a 9.5mm drill bit. Once you have drilled a hole into the frame using this bit, you can then tap the jack nut into place. Place the product you are installing onto the frame and attach by drilling the machine screw supplied into the jack nut through the fixing hole of the product. The jack nut will then split apart creating a secure fixing inside the uPVC frame. 

❓ Do I need special tools to install a jack nut?

🪛 No — simply tighten the supplied machine screw with a screwdriver or driver bit until the anchor expands securely.

🛒 Shop the Home Secure™ Fixings & Hardware Range

Complete your installation with our professional-grade fixings:

• 🔗 uPVC Screws & Fixings Collection