ISO 4207:2016 pdf free download.Counterbores with Morse taper shanks and detachable pilots Outils a lamer a queue cone Morse et pilote amovible. This ISO 4207 specifies the dimensions of counterbores with Morse taper shanks and detachable pilots for general use. NOTE Figure 1 is diagrammatic only and is not intended to indicate details of design. 2 Normative references The 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 of the referenced document (including any amendments) applies. Iso 296, Machine tools — SelJ-holding tapers for tool shanks 3 Dimensions The dimensions for the counterbores, Morse taper shanks and detachable pilots are given in Table 1 and shown in Figure 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 counterbores, Morse taper shanks and detachable pilots are as follows: — cutting diameter d1: z9; — pilot diameter d2: e8; — pilot hole diameter d3: h8;ISO 4207:2016 pdf free download.