The molder must design the steel mold to compensate for shrinkage. Under TG5, the allowed deviation from nominal shrinkage is tightly managed. For example, if the material datasheet says 0.5% shrinkage, the molder cannot let real shrinkage drift between 0.4% and 0.6%—TG5 forces a narrower band (e.g., 0.47%–0.53%).

The feature regarding refers specifically to the tolerance grade for thermoplastics injection molded parts .

DIN 16742 is a standard that specifically deals with tool holders and their interfaces. Tool holders are essential components in machine tools, serving as the bridge between the machine and the cutting tool. They are critical in ensuring that the cutting tool is accurately positioned and securely held during the machining process. The standard covers various aspects, including dimensions, materials, and performance requirements for tool holders.

Injection pressure, cooling rates, and tool temperature. Geometry: The wall thickness and complexity of the part.

stands for Tolerance Group 5 . The tolerance groups in DIN 16742 are generally arranged by precision level:

Always consult the original DIN 16742:2018-04 standard and your specific material supplier’s shrinkage data before committing to TG5 in a production contract.

Products that need a clean aesthetic and reliable assembly.

: Polyamide (PA) is notorious for medium to high shrinkage.