Used extensively in the automotive industry, threaded inserts provide a secure tight joint for additional assembly components, or when you need to incorporate a metal piece into the plastic part to complete a set part.

Durable and strong threaded inserts can be assembled and disassembled multiple times without losing strength, and allow for the neat and functional design of many sections of modern vehicles. In the world of injection molding, it's commonplace to set such threads into a design on behalf of a customer, and, assuming the design accommodates this feature correctly, it can be as smooth as any other production run.  

Firstly ensuring that the right material is chosen and that the mold is configured in the correct way, the insert is typically added as it exits the mold and thereby guarantees the integrity of the part, and ensures both plastic and fitting are strong, hardwearing, and usable correctly.

It is often asked: “Why can the thread not be just drilled into the part post-production”, and indeed this is possible using either ultrasonic or heat-staking to attach it to a pre-formed small hole, but if the ambition is to create the best overall bond and strength in readiness for regular use, then including the insert as part of the molding process, where resin completely encapsulates the inserts is, without doubt, the best option.

Operating many dozens of machines, specialist firm NS KUNSTSTOFFTECHNIK is well versed in the art of this type of structure and indeed has experts on hand to assist any potential customer to determine the best approach gleaned from their decades of experience.

Speak to the team via the contact button above for a no-obligation chat about the options available for your part, and let them walk you through each variant step-by-step to give you the confidence you’re making the right choice.