It is structured in strict compliance with the international ISO 5610 standard, where the alphanumeric code establishes these exact mechanical specifications:
D: Clamping system type (Double Clamp mechanism that fixes the insert from both the top face and into its center hole to ensure maximum anti-vibration stability).
C: Master pocket orientation (Holds an 80° Rhombic / Diamond-shaped indexable turning insert).
K: Toolholder style / Approach angle (Provides a 75° side cutting edge approach angle, ideal for high-depth-of-cut longitudinal turning with excellent radial chip redirection).
N: Insert clearance profile (0° negative normal clearance rake angle for deploying heavy-walled, double-sided inserts).
L: Operational tracking alignment (Left-Hand cutting direction configuration).
2525: Shank cross-sectional size (25 mm width × 25 mm height metric square steel shank).
M: Tool length identification letter (Indicates a standardized overall body length of 150 mm).
19: Pocket seat boundary size (Calibrated explicitly to carry size 19 inserts, matching a 19.05 mm (3/4") inscribed circle diameter).