Extremely tight, specialized tolerances typically reserved for high-precision optical components or micro-toolmaking.

: Features influenced by moving elements, such as mold splits, slider mechanisms, core pulls, or the dynamic clamping parting line. These require wider tolerance allowances due to microscopic physical movements under high pressure. DIN 16742 TG5 Tolerance Chart

: Note that DIN 16742 was officially withdrawn and superseded by the international standard DIN ISO 20457:2020-03 . Comparison of Tolerance Groups

Dimensions affected by moving parts (like across a parting line or between a slider and a core). These require wider tolerances Super-Ingenuity Material Choice: