When it comes to plastic parts with threaded features, choosing the right manufacturing process makes a big difference in quality, efficiency, and cost.
🔹 In-mold Threading
Threads are formed directly during injection molding through unscrewing mechanisms or collapsible cores.
High dimensional accuracy
Consistent quality across batches
No secondary operations, saving time and cost
Suitable for medium to large production volumes
🔹 Manual Thread Cutting
Threads are machined or tapped after molding.
Flexible for prototypes and low-volume production
Higher labor cost and longer lead time
Dimensional consistency depends on manual operation
More suitable for special threads or limited quantities
👉 For long-term production, in-mold threading offers superior repeatability and efficiency. For prototypes or small runs, manual threading remains a practical solution.
At Rilong, we evaluate each project carefully to recommend the most efficient and reliable process for your parts.
