Pattern Fasteners offers a component over-moulding service. We have in-house capability for machining and injection moulding. The process involves placing a metal insert directly into a mould tool before thermoplastic material is injected around it under pressure. Once cooled, the result is a durable fully integrated component ready for immediate use.

Looking to reduce assembly time, improve reliability and lower production costs?
Over-moulding and insert moulding combine metal components with high-performance injection moulded plastics to create a single finished part without pressing or assembly. Stronger, cleaner and more efficient than traditional multi-part assemblies. This approach eliminates many secondary assembly operations while improving consistency, strength and product appearance.
We can manage your mould tool requirements whether it be an existing tool to be transferred to our machines or should you have a new tool requirement, we can offer a very low cost solution.


Why Manufacturers Are Moving to Over-Moulding
✔ Reduce assembly and labour costs
✔ Eliminate secondary fastening operations
✔ Improve component strength and durability
✔ Reduce weight without sacrificing performance
✔ Improve vibration resistance and sealing
✔ Enhance corrosion protection
✔ Increase production consistency and repeatability
By combining multiple parts into one moulded assembly, manufacturers can significantly simplify production while improving overall product quality.
Ideal for Precision Metal Inserts
Insert moulding is commonly used with:
A wide range of materials can be incorporated including stainless steel, brass, aluminium and specialist alloys depending on the application.
Applications Across Multiple Industries
Over-moulded components are widely used throughout:
From high-volume production runs to specialist engineered components, over-moulding provides a cost-effective solution for improving both product performance and manufacturing efficiency.
Not sure what you need?
We can help customers source or manufacture difficult-to-find parts. Our team can advise on the best route forward
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