Wood Zamak Insert – Screw-in Threaded Insert for Wood

What is a Zamak Insert?

A Zamak insert (also known as a screw-in wood insert with internal metric thread) is a cast-metal threaded insert designed to create a durable, reusable internal thread in wood. The conical exterior thread allows easy installation into a pre-drilled hole. It is suitable for M4 to M10 applications and requires no special tools — a standard Allen key is enough.

Zamak is a zinc-based alloy optimized for die-casting, making it ideal for precision parts like inserts.

Description

Recommended Use

• Thread sizes: M4 – M10
• Material: Zamak zinc alloy
• Conical, interrupted external thread for smooth insertion into wood
• Countersunk collar for clean finishing and proper seating
• Suitable for soft to medium-density woods, chipboard, MDF, composites
• Ideal for furniture and assembly applications requiring disassembly

Advantages of Zamak Screw-in Inserts

• Strong, reusable metal thread in wood

• No tapping needed, quick installation

• Aesthetic flat finish thanks to the thin chamfered collar

• Cost-effective compared with steel or stainless steel inserts

• Perfect for demountable or modular furniture

Limitations

• Not recommended for hardwoods or high-load applications

• For intensive mechanical stress, a steel or stainless steel insert is preferred

Typical Applications

• Furniture (chairs, cabinets, tables)

• MDF/spaanplaat panels

• Modular or frequently assembled constructions

• General wood assembly and repair

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Frequently asked questions about Wood insert with hex and collar in die cast