Internal & External Threading
A popular design feature, injection molded threads give you the ability to fasten your plastic parts to other components securely with relative ease.
Adding molded threads to your plastic part design can increase a parts functionality but if not carefully designed can add unforeseen costs into the manufacturing process.
With injection molding, threads are created from the geometry of the mold cavity, as the molten resin enters the mold, and the material cools, it solidifies into the final state forming the details of the internal or external threads.
Molded threads represent undercuts and undercuts typically require side actions or additional components to the mold in order to capture the detail of the part.
Inside and outside threads are possible. However, inside threads tend to add higher tooling costs, having to incorporate collapsible cores or an unthreading mechanism to create the neccessary details inside of your plastic parts, so take consideration as to where threads must be located.
We are capable of creating a wide range of both external and internal injection molded threads. Working closely with one of our sales engineer will help to reduce your tooling costs and ensure the highest quality finished custom parts.