EN ISO 10666 EUROPEAN STANDARD NORME EUROPEENNE EUROPAISCHE NORM September 1999 ICS21.060.10 English version Drilling screws with tapping screw thread Mechanical and functional properties (ISO 10666 : 1999) Vis autoperceuses avec filetage de Bohrschrauben mit Blechschrauben- vis a tole - Caractéristiques gewinde - Mechanische und mécaniques et fonctionnelles funktionelle Eigenschaften (ISO 10666 : 1999) (ISO 10666 : 1999) This European Standard was approved by CEN on 1999-07-16. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national stand- member. The European Standards exist in three official versions (English, French, German). CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europaisches Komitee fur Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels @1999. Ref. No. EN ISO 10666 : 1999 E reserved worldwide for CEN national members. Page2 ENISO10666:1999 Foreword International Standard which was prepared by ISO/TC 2 “Fasteners' of the International Organization for Standardization, has been adopted by Technical Committee CEN/TC 185 ‘Threaded and non-threaded mechanical fasteners and acces- sories',theSecretariatof whichisheldbyDiN,asaEuropeanStandard. This European Standard shall be given the status of a national standard, either by publication of an identical textorbyendorsement,and conflictingnational standardswithdrawn,byMarch2oooatthelatest. In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of the follow- ing countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Endorsement notice The text of the International Standard ISO 10666 : 1999 was approved by CEN as a European Standard without any modification. NOTE: Normative references to international publications are listed in Annex ZA (normative) 1 Scope This International Standard specifies the properties of heat treated screws with a tapping screw thread in accordance with isO 1478, and which are designed with a drilling point which automatically drills the core hole for the screw during assembly. Such screws then automatically form the mating screw thread, either in a non-cutting or The purpose of this International Standard is to ensure that the screws are able to drill their core hole and form their mating screw thread without becoming distorted or fracturing in the process, provided that no overstressing has the assessmentofthemechanicalandoperational characteristics of adrillingscrew: surface hardness; capability of core hole drilling and forming of the mating female screw thread; torsional strength. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigatethe possibilityofapplyingthemost recent editionsofthenormativedocumentsindicatedbelow.For undated references, the latest edition of the normative document referred to applies. Members of IsO and IEC maintain registers of currently valid Interna