90.93 Standard confirmed Oct 31, 2022
ISO
ISO/TC 29/SC 9 Tools with defined cutting edges, holding tools, cutting items, adaptive items and interfaces
International Standard
25.100.30 Drills, countersinks, reamers
Published
ISO 4206:2016 specifies the dimensions, in millimetres, and the tolerances of counterbores with parallel shanks and solid pilots for general use.
WITHDRAWN
ISO 4206:1991
PUBLISHED
ISO 4206:2016
90.93
Standard confirmed
Oct 31, 2022