1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58screwdriver bits Part 1: Screwdriver bits for slotted head screwsICS 25.080.99; 25.140.01Assembly t
2、ools for screws and nuts Machine-operated BRITISH STANDARDBS ISO 2351-1:2007BS ISO 2351-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 September 2007 BSI 2007ISBN 978 0 580 54933 5Amendments issued since publicationAmd. No. Date Com
3、mentscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. National forewordThis British Standard is the UK implementation of ISO 2351-1:2007. It supersedes BS ISO 2351-1:2002 which is withdrawn.The UK participat
4、ion in its preparation was entrusted to Technical Committee MTE/15, Hand tools.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a Reference numberISO 2351-1:2007(E)INTERNATIO
5、NAL STANDARD ISO2351-1Second edition2007-02-15Assembly tools for screws and nuts Machine-operated screwdriver bits Part 1: Screwdriver bits for slotted head screws Outils de manuvre pour vis et crous Embouts tournevis machine Partie 1: Embouts tournevis pour vis tte fendue BS ISO 2351-1:2007ii iiiFo
6、reword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a tec
7、hnical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters o
8、f electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated
9、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 fo
10、r 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. This second edition cancels and replaces the first edition (ISO 2351-1:2002), which has been technically rev
11、ised. ISO 2351 consists of the following parts, under the general title Assembly tools for screws and nuts Machine-operated screwdriver bits: Part 1: Screwdriver bits for slotted head screws Part 2: Screwdriver bits for cross-recessed head screws Part 3: Screwdriver bits for hexagon socket screws BS
12、 ISO 2351-1:2007blank1Assembly tools for screws and nuts Machine-operated screwdriver bits Part 1: Screwdriver bits for slotted head screws 1 Scope This part of ISO 2351 prescribes the technical specifications for machine-operated screwdriver bits for slotted head screws. It applies to bits with mal
13、e hexagon drive or with cylindrical flat end drive as defined in ISO 1173, 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 ISO 1703. 2 Normative r
14、eferences 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
15、 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 for hand- and machine-operated screwdrivers 3 Dimensions Figure 1 and Table 1 show the rec
16、ommended 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. BS ISO 2351-1:20072 Key 1 Form A 2 Form C 3 Form E 4 Form G aPart in contact with the screw (in accordance with ISO 2380-1, Type C)
17、. bDriver end (in accordance with ISO 1173). Figure 1 Screwdriver bits (see Table 1) BS ISO 2351-1:20073Table 1 Recommended combinations between tip and driver end Dimensions in millimetres Male hexagon or cylindrical flat end of form (in accordance with ISO 1173) Nominal dimensions of tips (in acco
18、rdance with ISO 2380-1, Type C) A 3 A 5,5 C 4 C 6,3 C 8 C 12,5 E 6,3 E 8 E 11,2 G 7 l1max. 51 29 40 42 51 51 86 54 Thickness a Width b l2min. 25 11 13 14 14 24 52 47 25 2 X X 0,4 2,5 X X X 3 X X X X X X 0,5 4 X X X X X X 3 X X X X X X 3,5 X X X X X X 0,6 4,5 X X X X X X 4 X X X X X X X 0,8 5,5 X X X
19、 X X X X X X 4,5 X X X X X X X X X 5,5 X X X X X X X X X 1 6 X X X X X X X 6,5 X X X X X X X 1,2 8 X X X X X X X 8 X X X X X X X X 1,6 10 X X X X X X X 2 12 X X X X 2,5 14 X X X X 4 Technical requirements The technical specifications of bits are the same as those for screwdrivers in accordance with
20、ISO 2380-1, Type C. 5 Torque test Torque testing shall be carried out in accordance with ISO 2380-1, Type C. BS ISO 2351-1:20074 6 Designation A screwdriver bit in accordance with this part of ISO 2351 shall be designated by: a) “Bit”; b) the reference to this part of ISO 2351 (i.e. ISO 2351-1); c)
21、the form and the dimensions of the driver end (in accordance with ISO 1173); d) the dimensions of the tip (in accordance with ISO 2380-1, Type C). EXAMPLE A screwdriver bit for slotted head screws with a drive end E 11,2 (in accordance with ISO 1173) and the tip dimensions 1,6 mm 8 mm (in accordance
22、 with ISO 2380-1, Type C) is designated as follows Bit ISO 2351-1 E 11,2 1,6 8 7 Marking Screwdriver bits in accordance with this part of ISO 2351 shall be marked permanently and legibly with: a) the name of the manufacturer or supplier; b) dimensions of the tip, a b. For male hexagons A 3 and C 4,
23、the marking shall be given only on the smallest commonly used packaging unit. BS ISO 2351-1:20075Bibliography 1 ISO 1703, Assembly tools for screws and nuts Designation and nomenclature 2 ISO 2351-2, Assembly tools for screws and nuts Machine-operated screwdriver bits Part 2: Screwdriver bits for cr
24、oss-recessed head screw 3 ISO 2351-3, Assembly tools for screws and nuts Machine-operated screwdriver bits Part 3: Screwdriver bits for hexagon socket screws BS ISO 2351-1:2007BS ISO BSI389 Chiswick High RoadLondonW4 4AL2351-1:2007BSI British Standards InstitutionBSI is the independent national body
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