ISO 4204:2016 pdf free download.Countersinks, 900, with Morse taper shanks and detachable pilots Outils (1 chanlieiner (1 9Q0, ( queue cone Morse et pilote amovible. This ISO 4204 specifies the dimensions of 90° countersinks with Morse taper shanks and detachable pilots for general use. Figure 1 is diagrammatic only and is not intended to indicate details of design. 2 Normative references ‘l’he following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition ol the relerenced document (including any amendments) applies. ISO 296, Machine tools — Selj4iolding tapers for tool shanks 3 Dimensions The dimensions for 90° countersinks with Morse taper shanks and detachable pilots are given in Table .1. It specifies dimensions in metric units only, these being regarded as the only recommended dimensions in the future. 4 Tolerances The tolerances relating to the countersink, Morse taper shanks and detachahle pilots are as follows: — cutting diameter d1 :z9; pilot diameter d2: e8; — pilot hole diameter d3: H8;ISO 4204:2016 pdf free download.