SNMG inserts come in various sizes, corner radii, and other specifications. The most common variations include:
SNMG 1204 and SNMG 1906 are among the most widely used sizes.
12 or 19: Indicates an Inscribed Circle (IC) of 12mm or 19mm (approximate). The IC determines the overall size of the insert.
04, 06, 08, 12: Indicates the thickness (e.g., 0.157″ or 4mm for 04)
02, 04, 08: Indicates the corner radius (e.g., 0.031″ or 0.8 mm for 04). Larger radii provide a stronger cutting edge, while smaller radii offer a better surface finish.