Countersinks 90°Outils à chanfreiner 90°Context with the international standards ISO 3293 - 1975 and ISO 3294 - 1975 issued by the International Organization for Standardization (ISO), see explanations.
DIN 335:1979 history
2024DIN 335:2024-03 Countersinks 90° / Note: Date of issue 2024-02-09*Intended as replacement for DIN 335 (2007-12).