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1、 Reference number ISO 5749:2004(E) ISO 2004 INTERNATIONAL STANDARD ISO 5749 Third edition 2004-09-15 Pliers and nippers Diagonal cutting nippers Dimensions and test values Pinces et tenailles Pinces coupantes diagonales Dimensions et valeurs dessai ISO 5749:2004(E) PDF disclaimer This PDF file may c
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6、ht office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved ISO 5749:2004(E) ISO 2004 All rights reserved iii Foreword ISO (the International Organization for Standardization
7、) 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 technical committee has been established has the right to be repr
8、esented 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 of electrotechnical standardization. International Standards ar
9、e 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 to the member bodies for voting. Publication as an Internation
10、al 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 5749 was prep
11、ared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers. This third edition cancels and replaces the second edition (ISO 5749:1988) which has been technically revised. INTERNATIONAL STANDARD ISO 5749:2004(E) ISO 2004 All rights r
12、eserved 1 Pliers and nippers Diagonal cutting nippers Dimensions and test values 1 Scope This International Standard specifies the principal dimensions of diagonal cutting nippers and the test values for the nippers in order to verify their aptitude to function in conformity with ISO 5744. General t
13、echnical requirements are given in ISO 5743. The diagonal cutting nippers illustrated in this International Standard are examples only and are not intended to affect the manufacturers design. 2 Normative references The following referenced documents are indispensable for the application of this docu
14、ment. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5743, Pliers and nippers General technical requirements ISO 5744:2004, Pliers and nippers Methods of test 3 Dimensions and test va
15、lues 3.1 Diagonal cutting nippers for hard wire The main dimensions for cutting nippers for hard wire are shown in Figure 1 and given in Table 1. The cutting nippers shall be tested in accordance with ISO 5744. After the load test, the permanent set s shall not exceed the value given in Table 2. If
16、distance l1 is not suitable for the load test, the formula given in ISO 5744:2004, 4.2 shall be used. The cutting force, F1, and the diameter, d, of the test wire shall not exceed the values given in Table 2. Nippers having a lever ratio differing from the values given in Table 2 shall be checked fo
17、r compliance using the formula given in ISO 5744:2004, 5.3.3. ISO 5749:2004(E) 2 ISO 2004 All rights reserved Dimensions in millimetres a F = Load applied in load test or F1 force applied in cutting test. Figure 1 Diagonal cutting nippers for hard wire Table 1 Diagonal cutting nippers for hard wire,
18、 main dimensions Dimensions in millimetres l l3 w3 t1 max. max. max. 125 6 18 22 10 140 7 20 25 11 160 8 22 28 12 180 9 25 32 14 200 10 28 36 16 Table 2 Diagonal cutting nippers for hard wire, force application and test values Cutting test Load test Nominal length l l1 l2 Diameter of hard test wire
19、d a Maximum cutting force F1 max Load F Maximum permanent set smaxb mm mm mm mm N N mm 125 80 10 1,25 500 800 0,5 140 90 11 1,4 575 900 1 160 100 12,5 1,6 700 1 000 1 180 112 14 1,8 850 1 120 1 200 125 16 2 1 020 1 250 1 a Data for hard test wire are given in ISO 5744. b s = w1 w2 (see ISO 5744). IS
20、O 5749:2004(E) ISO 2004 All rights reserved 3 3.2 Diagonal cutting nippers for medium hard wire The main dimensions for cutting nippers for hard wire are shown in Figure 2 and given in Table 3. The cutting nippers shall be tested in accordance with ISO 5744. After the load test, the permanent set s
21、shall not exceed the value given in Table 4. If distance l1 is not suitable for the load test, the formula given in ISO 5744:2004, 4.2 shall be used. The cutting force, F1, and the diameter, d, of the test wire shall not exceed the values given in Table 4. Nippers having a lever ratio differing from
22、 the values given in Table 4 shall be checked for compliance using the formula given in ISO 5744:2004, 5.3.2. Dimensions in millimetres a F = Load applied in load test or F1 force applied in cutting test. Figure 2 Diagonal cutting nippers for medium hard wire Table 3 Diagonal cutting nippers for med
23、ium hard wire, main dimensions Dimensions in millimetres l l3 w3 t1 max. max. max. 125 6 18 22 10 140 7 20 25 11 160 8 22 28 12 180 9 25 32 14 200 10 28 36 16 ISO 5749:2004(E) 4 ISO 2004 All rights reserved Table 4 Diagonal cutting nippers for medium hard wire, force application and test values Cutt
24、ing test Load test Nominal length l l1 l2 Diameter of medium hard test wire d a Maximum cutting force F1 max Load F Maximum permanent set smaxb mm mm mm mm N N mm 125 80 12,5 1,6 450 800 0,5 140 90 14 1,6 450 900 1 160 100 16 1,6 460 1 000 1 180 112 18 1,6 460 1 120 1 200 125 20 1,6 460 1 250 1 a Da
25、ta for medium hard test wire are given in ISO 5744. b s = w1 w2 (see ISO 5744). 3.3 Toggle lever assisted side cutting nippers for hard wire The main dimensions for cutting nippers for hard wire are shown in Figure 3 and given in Table 5. The cutting nippers shall be tested in accordance with ISO 57
26、44. After the load test, the permanent set s shall not exceed the value given in Table 6. If distance l1 is not suitable for the load test, the formula given in ISO 5744:2004, 4.2 shall be used. The cutting force, F1, and the diameter, d, of the test wire shall not exceed the values given in Table 6
27、. Nippers having a lever ratio differing from the values given in Table 6 shall be checked for compliance using the formula given in ISO 5744:2004, 5.3.4. ISO 5749:2004(E) ISO 2004 All rights reserved 5 Dimensions in millimetres a F = Load applied in load test or F1 force applied in cutting test. Fi
28、gure 3 Toggle lever assisted side cutting nippers for hard wire Table 5 Toggle lever assisted side cutting nippers for hard wire, main dimensions Dimensions in millimetres l l3 w3 g t1 max. max. min. max. 200 10 25 45 5 18 224 11 28 48 6 18 Table 6 Toggle lever assisted side cutting nippers for hard
29、 wire, force application and test values Cutting test Load test Nominal length l l1 l2 Lever ratioa Diameter of hard test wire d b Maximum cutting force F1 max Load F Maximum permanent set smaxc mm mm mm mm N N mm 200 140 18 14,5 2,5 690 840 1 224 160 20 16,5 2,5 790 950 1 a The lever ratio is equal
30、 to (w5 w1)/g. b Data for hard test wire are given in ISO 5744. c s = w1 w2 (see ISO 5744). ISO 5749:2004(E) 6 ISO 2004 All rights reserved 4 Designation EXAMPLE 1 Diagonal cutting nippers, number 101 in accordance with ISO 5742, with a nominal length of 140 mm and for hard wire (H) are designated a
31、s follows: Diagonal cutting nippers 101 - ISO 5749 - 140 - H EXAMPLE 2 Diagonal cutting nippers, number 101 in accordance with ISO 5742, with a nominal length of 160 mm and for medium wire (M) are designated as follows: Diagonal cutting nippers 101 - ISO 5749 - 160 - M EXAMPLE 3 Toggle lever assiste
32、d side cutting nippers, number 105 in accordance with ISO 5742, with a nominal length of 200 mm are designated as follows: Toggle lever assisted side cutting nippers 105 - ISO 5749 - 200 5 Marking Marking shall be in accordance with ISO 5743. -,-,- ISO 5749:2004(E) ISO 2004 All rights reserved 7 Bibliography 1 ISO 5742, Pliers and nippers Nomenclature ISO 5749:2004(E) ICS 25.140.30 Price based on 7 pages ISO 2004 All rights reserved