Woodworking fixings that create permanent, reusable threads in timber and other materials, ideal for furniture assembly and repairs. Gain confidence that joints will stay secure and survive repeated use with KGGZKG Threaded Inserts. Are these reliable enough for everyday carpentry and retrofit work?
⚡ At a Glance
- • Holding Strength: Deep external threads and a flanged hex head deliver a firm mechanical grip in sleeves and drilled holes
- • Best for: Furniture makers, carpenters and DIYers needing secure, reusable metal threads in wood and mixed materials
- • Not ideal for: Applications that require fully flush or countersunk fastenings
M8 internal thread inserts are 25mm long and use a high-hardness zinc alloy with an electroplated colourful zinc finish. Screw-in installation uses a hex key and works in wood, plywood, plastic, fibreglass and thin steel.
Long-lasting corrosion resistance - thanks to premium zinc alloy with electroplated finish
High-hardness zinc alloy construction is treated with an electroplated colourful zinc coating to resist corrosion and rust while offering wear resistance and deformation resistance. The hardened material reduces the chance of thread stripping under load.
Fastenings stay serviceable for longer in humid or demanding environments, reducing the need for replacements. Suitable for furniture that sees regular assembly and disassembly.
Secure anti-rotation grip - with precision external thread design
External threads are uniformly deep, smooth and burr-free to provide positive locking and strong resistance to twisting or vibrational pull-out. A flanged hex socket head helps seat the insert accurately in the sleeve.
Bolts remain tight under vibration and repeated use, so wardrobes, beds and cabinets keep their structural integrity. Less risk of loosening compared with simpler fasteners.
Quick single-sided installation - with hex drive head and screw-in method
Installation requires drilling an appropriately sized hole and using a hex key to screw the captive nut into place, enabling fitting from one side of the workpiece. This eliminates the need to access the rear of an assembly like barrel nuts or T-nuts often require.
Retrofits and tight-space assemblies become far easier, speeding up repairs and new builds. Ideal when access behind a panel is restricted.
✨ The 4 Key Reasons for KGGZKG Threaded Inserts
- Electroplated Zinc Finish - Resists rust, extending lifespan in damp or coastal interiors
- External Thread Profile - Prevents rotation and loosening under vibration and load
- Hex Drive Head - Allows single-side installation for quick, tight fittings and precise seating
- Wide Material Compatibility - Works in wood, plywood, plastic, fibreglass and thin steel
📋 Technical Details at a Glance
- Category: Threaded inserts for wood and mixed materials
- Thread size: M8 (8mm) internal thread
- Length: 25mm
- Quantity: 25 pieces per pack
- Material: High-hardness zinc alloy
❓ Frequently Asked Questions
Q: What thread size and length are these inserts?
A: Internal thread size is M8 (8mm) and each insert is 25mm long.
Q: Can the inserts be installed from one side of the workpiece?
A: Yes, the screw-in design and hex socket drive allow installation from one side using a hex key after drilling the correct hole.
Q: Are these suitable for use in plywood and plastic?
A: Yes, the inserts can be installed in plywood and plastic as well as wood, fibreglass, cork and thin steel according to the product description.
🏆 Our Verdict
Ideal for furniture makers, carpenters and keen DIYers who need reliable, reusable threaded connections in wood and mixed materials. Premium zinc alloy construction, electroplated finish and an external thread profile deliver corrosion resistance and secure anti-rotation grip that can be installed from one side. While cost will vary by source, durability and broad compatibility make these inserts a sensible long-term investment for repairs and new builds.
