ISO INTERNATIONAL STANDARD 2351-1 Second edition 2007-02-15 Assembly tools for screws and nuts - Machine-operated screwdriver bits - Part 1: Screwdriver bits for slotted head screws Outils de manoeuvre pour vis et écrous - Embouts tournevis a machine- Partie 1: Embouts tournevis pour vis a tete fendue Reference number ISO 2351-1:2007(E) @ ISO 2007 ISO 2351-1:2007(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer 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. The main task of technical committees is to prepare International Standards. Draft International Standards 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 rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 2351-1 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers. revised. Iso 2351 consists of the following parts, under the general title Assembly tools for screws and nuts- Machine-operatedscrewdriverbits: Part 1: Screwdriver bits for slotted head screws Part2:Screwdriverbits forcross-recessed head screws Part3:Screwdriverbitsforhexagonsocketscrews @ IS0 2007 - All rights reserved ili INTERNATIONAL STANDARD ISO 2351-1:2007(E) Assembly tools for screws and nuts Machine-operated screwdriver bits - Part 1: Screwdriver bits for slotted head screws 1 Scope headscrews.ItappliestobitswithmalehexagondriveorwithcylindricalflatenddriveasdefinedinlsO1173 and to tips for screwdrivers Type C as defined in ISO 2380-1. It also gives recommended combinations between tips and bits. NOTE Machine-operated screwdriver bits are listed under number 3 2 04 01 0 in IS0 1703. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso 1173, Assembly tools for screws and nuts Drive ends for hand- and machine-operated screwdriver bits and connecting parts - Dimensions, torque testing IsO 2380-1, Assembly tools for screws and nuts - Screwdrivers for slotted-head screws - Part 1: Tips foi hand- and machine-operated screwdrivers Dimensions Figure 1 and Table 1 show the recommended combinations of screwdriver bits for slotted head screws. The shape of the liaison between the tip and the driver end is at the discretion of the manufacturer. @ IS0 2007 - All rights reserved ISO 2351-1:2007(E) X Key Form A 2 Form C 3 Form E 4 Form G Part:in contact with the screw (in accordance with ISO 2380-1, Type C) b Driver end (in accordance with ISO 1173). Figure 1 - Screwdriver bits (see Table 1) @ Iso 2007-All rights reserved ISO 2351-1:2007(E) Table 1 Recommended combinations between tip and driver end Dimensionsinmillimetres Nominal Male hexagon or cylindrical flat end of form (in accordance with ISO 1173) dimensions of tips (inaccordance A3 A 5,5 C 4 C 6,3 C 8 C 12,5 E 6,3 E8 E 11,2 G 7 with ISO 2380-1, Type C) Thickness Width I1 max. 51 29 40 42 51 51 86 54 Q b l2 min. 25 11 13 14 14 24 52 47 25 2 0,4 2,5 3 x x 0,5 4 x x x x 3 0,6 3,5 x 4,5 x 4 x 0,8 5,5 x x x x 4,5 x x 1 5,5 X x x 6 x x 6,5 × × 1,2 8 8 x x x x x 1,6 10 x x x 2 12 2,5 14 4 Technical requirements The technical specifications of bits are the same as those for screwdrivers in accordance with IsO 2380-1 Type C. 5 Torque test Torquetest