Wood insert nut with hex and collar – metal screw-in insert for wood

The steel wood insert nut with hex and collar is a metal threaded bushing with a metric internal thread (M4 to M16) and a coarse external wood thread. It is screwed directly into a pre-drilled hole in wood and creates a strong, reusable and wear-resistant thread for furniture, table tops and many other wooden constructions.

Description

What is a wood insert nut with hex and collar?

A wood insert nut with hex and collar is a metal bushing with a metric internal thread and a wood thread on the outside. The external hex drive makes installation quick and stable using a hex bit or hex key. The collar acts as a stop so the insert does not sink too deep and provides extra bearing surface on the wood.

Key features

• Metric internal thread from M4 to M16
• Strong coarse outer thread for excellent pull-out resistance in wood
• External hex drive for easy mounting with standard tools
• Collar for neat finish and extra strength at the surface
• Suitable for softwood and many hardwoods
• Ideal for knock-down furniture, table frames, cabinets, stairs, wood constructions and other wood joints

Stainless steel wood insert nuts

Many wood insert nuts and self-tapping inserts with slot or holes are also available from stock in stainless steel grades A2 and A4. Stainless steel versions are recommended in humid environments or when corrosion resistance is important.

How to fix a heavy wooden tabletop to a metal frame

1. Determine the correct drilling positions based on the holes in the metal frame.

2. Drill the holes in the thick wooden tabletop with the correct diameter for the wood insert nuts and, if necessary, countersink them so the collar sits flush.

3. Screw the wood inserts into the holes using an external hex bit or hex key until the collar rests neatly on the surface.

4. Check the bolt length to avoid damaging the decorative top layer.

5. Fasten the metal frame to the tabletop with standard metric bolts. This solution allows frequent assembly and disassembly without damaging the wood.

Wood insert nut with or without collar

This insert is available both with collar and as a version without collar with internal hex drive. When you need more internal thread length or a different installation method, other wood inserts and self-tapping inserts from our range can offer the right solution.

When not to use screw-in wood insert nuts

Steel wood insert nuts are not the ideal solution for all exotic wood types. For those applications we recommend self-tapping slotted inserts with cutting slot, available from M3 up to M20 in steel zinc plating, stainless steel 303 and stainless steel 316.

Other solutions for screw-in inserts in wood

Depending on your project, alternative products such as stainless steel wood insert nuts, self-tapping slotted inserts, long wood inserts or die-cast wood inserts may be more suitable. Our team is happy to help you select the best insert and to provide technical data sheets on request.

Download PDF

Frequently asked questions about Wood insert nut with hex and collar