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ISO 4204:1977
Countersinks, 90 degrees, with Morse taper shanks and detachable pilotsstandard by International Organization for Standardization, 02/01/1977
This International Standard specifies the dimensions of 90 countersinks with Morse taper shanks and detachable pilots for general use.
The illustration is diagrammatic only and is not intended to indicate details of design.
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