ISO INTERNATIONAL 15065 STANDARD First edition 2005-02-15 Countersinksforcountersunkhead screws with head configuration in accordance with IsO 7721 Fraisures pour vis a tete fraisee avec une configuration de la tete conformeaIlso7721 Reference number ISO 15065:2005(E) ii Foreword (iSO member bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeen non-governmental, in liaison with IsO, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ISO15065 was prepared by Technical Committee ISO/TC2,Fasteners,Subcommittee SC7,Reference ii blank Countersinks for countersunk head screws with head configuration in accordance with ISO 7721 1Scope This International Standard specifies the dimensions and designation of countersinks for countersunk head screws with a head configuration in accordance with ISO 7721. This International Standard is applicable to the following types of screws: slotted countersunk flathead screws according to IsO 2009; slotted countersunk raised head screws according to Iso 2010 slotted countersunk flat head tapping screws according to ISO 1482; slotted countersunk raised head tapping screws according to IsO 1483; cross-recessed countersunk flat head screws according to IsO 7046-1 and Iso 7046-2; cross-recessed countersunk raised head screws according to Iso 7047; cross-recessed countersunk flat head tapping screws according to Iso 7050; cross-recessed countersunk raised head tapping screws according to IsO 7051; cross-recessed countersunk flat head drilling screws according to IsO 15482; cross-recessed countersunk raised head drilling screws according to IsO 15483; hexalobular socket countersunk raised head screws according to Iso14584; hexalobular socket countersunk flat head tapping screws according to Iso 14586; hexalobular socket countersunkraisedheadtapping screws according toIsO 14587. 2 Normativereferences The following referenced documents are indispensable for the application of this document. For dated document (including any amendments) applies. IsO273:1979,Fasteners—Clearanceholesforboltsandscrews Iso7721:1983,Countersunkheadscrews-Head configurationandgauging Dimensions 3 The dimensions of the countersink shall be as specified in Figure 1 and Table 1. 90° ±1° IT12A + βdn AL Figure1-Dimensions Table1—Dimensionsof countersink Dimensions in millimetres dha De Nominal Thread size min. max. min. max. size (nom.) (nom.) 1,6 M1,6 1,80 1,94 3,6 3,7 0,95 2 M2 ST2,2 2,40 2,54 4,4 4,5 1,05 2,5 M2,5 2,90 3,04 5,5 5,6 1,35 3 M3 ST2,9 3,40 3,58 6,3 6,5 1,55 3,5 M3,5 ST3,5 3,90 4,08 8,2 8,4 2,25 4 M4 ST4,2 4,50 4,68 9,4 9,6 2,55 5 M5 ST4,8 5,50 5,68 10,40 10,65 2,58 5,5 ST5,5 6,00b 6,18 11,50 11,75 2,88 6 M6 ST6,3 6,60 6,82 12,60 12,85 3,13 80 M8 ST8 9,00 9,22 17,30 17,55 4,28 10 M10 ST9,5 11,00 11,27 20,0 20,3 4,65 a Clearance hole according to ISO 273, medium series, tolerance H13. b Not specified in ISo 273. 2 Designation Countersinks for countersunk head screws with head configuration in accordance with IsO 7721 shall be designated by reference to this International Standard and the nominal size. EXAMPLE metric screw thread M4 or with tapping screw thread ST4,2 (nominal size 4) is designated as follows: CountersinkISo15065-4 5 Representationindrawings In technical drawings, the representation of countersinks shall be as shown in Figure 2. ISO15065-4 ISO15065-4 Figure 2 2-Representa