Decode any ISO 1832 / ANSI turning insert designation (DNMG, CNMG, WNMG and more) and see the shape, angles, size and corner radius drawn to scale.
Reference aid — verify before you cut. Thread data per ASME B1.1 (Unified), ASME B1.8 (Stub Acme) and ISO 965 (metric M profile); charts cite their source in each tool. Formulas and data are checked against published standards, but errors and edge cases are possible — always confirm critical dimensions against the controlling standard or a calibrated gage before machining. No warranty; use at your own risk. Tap the star on a tool to favorite it.
Insert designation
Type the shape code — e.g. DNMG432, CNMG431, WNMG432, VBMT331. The first four letters (shape, clearance, tolerance, type) are enough to draw it; add the inch size digits for true scale. Every position is decoded from the standard — see the key below. Tap a value to copy it.
Insert
Capabilities
Designation key
Source: ISO 1832 / ANSI B212.4. The first four letters decode for every insert; the trailing inch digits give size, thickness and corner radius. Metric size & thickness codes are table-driven — only the metric corner radius (last two digits ×0.1 mm) is decoded for now.