These charts show the ANSI and ISO designations for turning indexable inserts.
ANSI and ISO Insert Designations
BS 4193-14:1997 - Hardmetal insert tooling. Specification for designation of boring bars (tool holders with cylindrical shank) for indexable inserts (British Standard)
Identification / Boring Bar ANSI Designation Chart - Technical Info/Cutting Formula
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How To Identify Indexable Inserts
How To Identify Indexable Inserts
Trials and tribulations of insert decoding
Insert Designation Chart, PDF, Engineering Tolerance
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ISO Designations - Knight Carbide
Cracking the Code Cutting Tool Engineering