1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 192 : Part 1 : 1996 IC
2、S 25.140.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Open-ended wrenches Part 1. Metric and unifiedThis British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board
3、 and comes into effect on 15 December 1996 BSI 1996 The following BSI references relate to the work on this standard: Committee reference MTE/15 Draft for comment 95/712069 DC ISBN 0 580 26273 1 BS 192 : Part 1 : 1996 Amendments issued since publication Amd. No. Date Text affected Committees respons
4、ible for this British Standard The preparation of this British Standard was entrusted to Technical Committee MTE/15, Hand tools, upon which the following bodies were represented: British Telecommunications plc Consumer Policy Committee of BSI Federation of British Hand Tool Manufacturers Handle Manu
5、facturers Association Institute of Carpenters Institute of Trading Standards Administration The following were also represented through a subcommittee: Ministry of Defence Coopted membersBS 192 : Part 1 : 1996 BSI 1996 i Contents Page Committees responsible Inside front cover Foreword ii Specificati
6、on 1 Scope 1 2 References 1 3 Hardness 1 4 Finish 1 5 Marking 1 6 Form and dimensions 1 7 Resistance to torque 1 Annexes A (normative) Unified inch series 5 B (informative) Guidance on safe usage 8 C (normative) Torque test 8 Tables 1 Dimensions of wrenches for metric sizes 3 2 Test torque for metri
7、c wrenches 4 A.1 Dimensions of wrenches for unified inch sizes 5 A.2 Test torque for unified inch wrenches 7 Figures 1 Wrench form 2 C.1 Torque test: location of test mandrel 8ii BSI 1996 BS 192 : Part 1 : 1996 Foreword This British Standard has been prepared by Technical Committee MTE/15. It partia
8、lly supersedes BS 192 : 1982 which will be withdrawn when a revision of the British Standard hexagon and Whitworth sizes has been undertaken. In this edition the tolerances across flats of hexagons have been amended to align more closely with but not identically to practices of the International Org
9、anization for Standardization (ISO) in ISO 691 : 1983. This standard is also related to but not identical with ISO 1085 : 1986, ISO 1711 : 1975, ISO 3318 : 1990 and ISO 10102 : 1990. To meet continuing market needs, annex A gives dimensions of wrenches for unified inch sizes. Consideration has been
10、given to the relationship of blanks for metric and inch series wrenches. Where possible those used for metric wrenches have been adopted for unified inch series wrenches thereby reducing the overall number of blanks required to cover the complete range in this standard. Apart from the nominal AF siz
11、e, all dimensions for unified inch series wrenches are given in millimetres. The material used for the manufacture of wrenches is not specified but torque requirements are specified to ensure a minimum level of performance. Compliance with a British Standard does not of itself confer immunity from l
12、egal obligations. BSI 1996 1 BS 192 : Part 1 : 1996 1) Marking BS 192 : Part 1 : 1996 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the cla
13、im is solely the claimants responsibility. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable Specification 1 Scope This British Standard specifies design, dimensional and testing requirements for metric and unified wrenches. It applies
14、 to wrenches in the range 3.2 mm to 60 mm and unified sizes in the range in to 2 in. 3 16 3 8 Guidance on safe usage of open-ended wrenches is given in annex B. 2 References 2.1 Normative references This British Standard incorporates, by dated or undated reference, provisions from other publications
15、. These normative references are made at the appropriate places in the text and the cited publications are listed on the inside back cover. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publication apply to this British Standard only whe
16、n incorporated in the reference by amendment or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. 2.2 Informative references This British Standard refers to other publications that provide information or guidance. Editions of these p
17、ublications current at the time of issue of this standard are listed on the inside back cover, but reference should be made to the latest editions. 3 Hardness The hardness of the wrench shall be 39 to 48 HRC inclusive when determined in accordance with BS EN 10109-1. 4 Finish All sharp edges shall b
18、e removed and wrenches shall be free from cracks, burrs or any other deleterious defects which may adversely affect the performance of the wrench or may during proper use of the wrench, give rise to the risk of injury to the user. Any protective finish shall be in accordance with the appropriate Bri
19、tish Standard. 5 Marking The wrenches shall be plainly and indelibly marked as follows: a) metric sizes shall be marked with the nominal AF size, e.g., 19; b) unified sizes shall be marked with the nominal AF size, e.g., ; 7 16 c) wrenches shall be marked with the name or trade mark of the manufactu
20、rer (or responsible supplier); d) the manufacturer shall also include the number and date of this British Standard, i.e. BS 192 : Part 1 : 1996 1) . 6 Form and dimensions The form and dimensions shall be as in figure 1 and in tables 1 and A.1. 7 Resistance to torque When tested in accordance with th
21、e method described in annex C, wrenches shall be capable of meeting the minimum test torque requirements given in tables 2 and A.2. After testing in accordance with annex C, the wrench shall show no permanent deformation or other damage which may adversely affect its safe use.2 BSI 1996 BS 192 : Par
22、t 1 : 1996 L E B 15 0.5 Overall length + _ 15 0.5 + _ 1 S 1 B 2 S 2 Figure 1. Wrench form BSI 1996 3 BS 192 : Part 1 : 1996 Table 1. Dimensions of wrenches for metric sizes Nominal size across flats mm Overall length L mm Across flats S mm Head width B mm Head thickness E mm S.1 S.2 B.1 B.2 Min. Max
23、. Min. Max. Min. Max. Max. Max. Max. 3.2 3 4 variable up to maximum 140 mm 3.22 3.28 4.02 4.12 14 15 3.0 4 3 5 4.02 4.12 5.02 5.12 15 18 3.5 5 3 5.5 5.02 5.12 5.52 5.62 18 19 3.5 5.5 3 7 5.52 5.62 7.03 7.15 19 22 4.5 6 3 7 6.03 6.15 7.03 7.15 20 22 4.5 7 3 8 125 140 7.03 7.15 8.03 8.15 22 24 4.5 8 3
24、 9 140 155 8.03 8.15 9.03 9.15 24 26 5.0 8 3 10 140 155 8.03 8.15 10.04 10.19 24 28 5.5 10 3 11 145 165 10.04 10.19 11.04 11.19 28 30 6.0 10 3 13 155 180 10.04 10.19 13.04 13.24 28 34 7.0 11 3 13 155 180 11.04 11.19 13.04 13.24 30 34 7.0 12 3 13 155 180 12.04 12.24 13.04 13.24 32 34 7.0 12 3 14 165
25、190 12.04 12.24 14.05 14.27 32 36 7.0 13 3 17 180 210 13.04 13.24 17.05 17.30 34 43 7.0 14 3 15 180 210 14.05 14.27 15.05 15.27 36 39 7.5 16 3 17 180 210 16.05 16.27 17.05 17.30 41 43 8.5 17 3 19 195 225 17.05 17.30 19.06 19.36 43 47 9.0 18 3 19 195 225 18.05 18.30 19.06 19.36 45 47 9.0 19 3 22 215
26、250 19.06 19.36 22.06 22.36 47 53 10.0 19 3 24 230 270 19.06 19.36 24.06 24.36 47 57 11.0 20 3 21 215 250 20.06 20.36 21.06 21.36 49 51 10.0 22 3 23 230 265 22.06 22.36 23.06 23.36 53 55 10.5 22 3 24 230 270 22.06 22.36 24.06 24.36 53 57 11.0 24 3 25 245 290 24.06 24.36 25.06 25.36 57 60 10.5 24 3 2
27、7 245 290 24.06 24.36 27.08 27.48 57 64 12.0 26 3 27 245 290 26.08 26.48 27.08 27.48 62 64 12.0 27 3 30 265 315 27.08 27.48 30.08 30.48 64 70 13.0 28 3 29 265 315 28.08 28.48 29.08 29.48 66 68 13.0 30 3 31 275 325 30.08 30.48 31.08 31.48 70 72 14.0 30 3 32 275 325 30.08 30.48 32.08 32.48 70 74 13.5
28、30 3 34 300 370 30.08 30.48 34.10 34.60 70 78 14.0 30 3 36 300 370 30.08 30.48 36.10 36.60 70 83 14.5 32 3 35 300 370 32.08 32.48 35.10 35.60 74 81 14.5 32 3 36 300 370 32.08 32.48 36.10 36.60 74 83 14.5 34 3 36 300 370 34.10 34.60 36.10 36.60 78 83 14.5 36 3 41 335 400 36.10 36.60 41.10 41.60 83 93
29、 16.0 41 3 46 365 450 41.10 41.60 46.10 46.60 93 104 17.5 46 3 50 390 500 46.10 46.60 50.10 50.60 104 112 19.0 50 3 55 425 510 50.10 50.60 55.12 55.72 112 123 20.5 55 3 60 455 540 55.12 55.72 60.12 60.72 123 133 22.04 BSI 1996 BS 192 : Part 1 : 1996 Table 2. Test torque for metric wrenches Nominal s
30、ize across flats mm Test torque Nm Test mandrel height Tol. h13* mm 3.2 1.02 1.28 4 1.90 1.60 5 3.55 2.00 5.5 4.64 2.40 6 5.92 2.80 7 9.12 3.20 8 13.3 4.00 9 18.4 4.40 10 24.0 4.80 11 32.3 5.60 12 41.2 6.00 13 51.6 6.40 14 63.5 7.00 15 77.0 7.40 16 92.3 8.00 17 107 8.80 18 128 9.60 19 149 10.20 20 1
31、72 10.70 21 198 11.20 22 225 11.80 23 255 12.30 24 287 12.80 25 322 12.30 26 359 12.90 27 399 14.40 28 441 14.90 29 487 15.50 30 536 16.00 31 587 16.40 32 643 16.80 34 761 17.60 35 825 18.40 36 894 19.20 41 1154 21.60 46 1453 24.00 50 1716 26.80 55 2077 28.80 60 2471 31.20 * See BS EN 20286-2.BS 192
32、 : Part 1 : 1996 BSI 1996 5 Table A.1 Dimensions of wrenches for unified inch sizes Nominal size across flats in Overall length L mm Across flats S mm Head width B mm Head thickness E mm S.1 S.2 B.1 B.2 Min. Max. Min. Max. Min. Max. Max. Max. Max. 3 16 3 1 4 variable up to maximum 4.78 4.88 6.38 6.5
33、0 17 20 4.54 1 4 3 5 16 140 mm 6.38 6.50 7.97 8.09 20 24 5.18 5 16 3 11 32 140 155 7.97 8.09 8.76 8.88 24 25 5.49 5 16 3 3 8 140 155 7.97 8.09 9.57 9.72 24 27 5.81 11 32 3 3 8 140 155 8.76 8.88 9.57 9.72 25 27 5.81 3 8 3 7 16 145 165 9.57 9.72 11.15 11.30 27 30 6.45 7 16 3 1 2 155 180 11.15 11.30 12
34、.74 12.94 30 34 7.08 1 2 3 9 16 165 190 12.74 12.94 14.34 14.56 34 37 7.72 9 16 3 5 8 180 210 14.34 14.56 15.93 16.15 37 40 8.35 5 8 3 11 16 180 210 15.93 16.15 17.51 17.76 40 44 8.99 5 8 3 3 4 195 225 15.93 16.15 19.11 19.41 40 47 9.62 11 16 3 3 4 195 225 17.51 17.76 19.11 19.41 44 47 9.62 11 16 3
35、13 16 215 250 17.51 17.76 20.70 21.00 44 50 10.30 3 4 3 13 16 215 250 19.11 19.41 20.70 21.00 47 50 10.30 3 4 3 7 8 215 250 19.11 19.41 22.29 22.59 47 54 10.90 13 16 3 7 8 215 250 20.70 21.00 22.29 22.59 50 54 10.90 7 8 3 15 16 230 270 22.29 22.59 23.87 24.17 54 57 11.50 7 8 3 1 1 16 245 290 22.29 2
36、2.59 27.07 27.47 54 64 12.80 Annex A (normative) Unified inch series Dimensions of wrenches for unified inch sizes are given in table A.1.6 BSI 1996 BS 192 : Part 1 : 1996 Table A.1 Dimensions of wrenches for unified inch sizes (continued) Nominal size across flats in Overall length L mm Across flat
37、s S mm Head width B mm Head thickness E mm S.1 S.2 B.1 B.2 Min. Max. Min. Max. Min. Max. Max. Max. Max. 15 16 3 1 245 290 23.87 24.17 25.46 25.76 57 60 12.20 15 16 3 1 1 8 265 315 23.87 24.17 28.66 29.06 57 67 12.90 1 3 1 1 16 245 290 25.46 25.76 27.07 27.47 60 64 12.80 1 1 16 3 1 1 8 265 315 27.07
38、27.47 28.66 29.06 64 67 12.90 1 1 16 3 1 1 4 275 325 27.07 27.47 31.83 32.33 64 74 12.90 1 1 8 3 1 1 4 275 325 28.66 29.06 31.83 32.23 67 74 12.90 1 1 8 3 1 5 16 300 370 28.66 29.06 33.44 33.94 67 77 14.00 1 1 4 3 1 7 16 300 370 31.83 32.23 36.61 37.11 74 83 14.40 1 5 16 3 1 1 2 300 370 33.44 33.94
39、38.21 38.71 76 87 14.40 1 3 8 3 1 1 2 300 370 35.03 35.53 38.21 38.71 81 87 14.40 1 7 16 3 1 5 8 335 400 36.61 37.11 41.88 41.89 83 93 16.40 1 5 8 3 1 13 16 365 450 41.38 41.88 46.14 46.64 93 104 18.40 1 11 16 3 1 7 8 365 450 42.96 43.46 47.73 48.23 98 107 18.40 1 13 16 3 2 390 500 46.14 46.84 50.90
40、 51.40 104 112 20.00 2 1 16 3 2 1 4 425 510 52.49 52.99 57.30 57.90 118 127 24.00 2 3 16 3 2 3 8 455 540 55.70 56.30 60.50 61.10 123 133 24.00 BSI 1996 7 BS 192 : Part 1 : 1996 Table A.2 Test torque for unified inch wrenches Nominal size across flats in Test torque Nm Test mandrel height Tol. h13* m
41、m 3 16 3.10 1.65 1 4 6.94 2.4 5 16 13 2.8 11 32 16.9 3.2 3 8 21.6 3.2 7 16 33.2 5.7 1 2 48.3 6.9 9 16 67.2 8.5 5 8 90.2 9.1 11 16 117 9.7 3 4 150 11.2 13 16 188 11.8 7 8 231 12.4 15 16 280 14.0 1 336 14.8 Table A.2 Test torque for unified inch wrenches (continued) Nominal size across flats in Test t
42、orque Nm Test mandrel height Tol. h13* mm 1 1 16 398 15.6 1 1 8 467 16.5 1 1 4 628 18.4 1 5 16 720 19.3 1 3 8 820 20.2 1 7 16 915 21.1 1 1 2 996 22.2 1 5 8 1169 24.2 1 11 16 1261 25.1 1 13 16 1455 26.3 1 7 8 1557 27.6 2 1771 29.5 2 3 16 2119 33.3 2 1 4 2442 34.3 2 3 8 2498 35.3 * See BS EN 20286-2.8
43、 BSI 1996 BS 192 : Part 1 : 1996 Test mandrel height Test mandrel AF Wrench NOTE. The test mandrel height shall be not less than the wrench head thickness. Figure C.1 Torque test: location of test mandrel Annex B (informative) Guidance on safe usage Always select the correct size of wrench having th
44、e correct opening for the nut or fastener concerned. Always hold the wrench firmly in a comfortable position and adjust stance to prevent a fall should the tool slip. Never tilt an open-ended wrench; the tool should always be fully seated around the nut or bolt head. Never use a tube or any other fo
45、rm of extension on a wrench to increase leverage, or strike a conventional wrench with a hammer to free a frozen nut. Use open-ended wrenches for their designed purpose only and never use a wrench as a striking tool or as a lever. Never strike a wrench with another tool. Never expose wrenches to exc
46、essive heat since this may ruin the temper of the working parts of the tool. Wrenches should not be ground to alter their shape. Inspect wrenches periodically for any sign of damage or wear and discard any tool which shows signs of chipping or distortion. Extreme care should be taken not to confuse
47、ordinary plastic dipped handles (designed for comfort) with tools having electrical insulating properties and which are so marked. Annex C (normative) Torque test C.1 Apparatus C.1.1 Test mandrel. The height of the mandrel is given in tables 2 and A.2. The test mandrel across flats dimension is equa
48、l to the nominal dimension in tables 2 and A.2, but with a tolerance of h8 (see BS EN 20286-2). The mandrel is hardened to 55 HRC min. C.2 Procedure Fully engage the wrench on the test mandrel, as illustrated in figure C.1. Apply a gradually increasing force until the minimum test torque is reached,
49、 see tables 2 and A.2. NOTE.1. The torque is calculated as the product of the magnitude of the load by the distance measured between the point of application of the load and the centre of the test mandrel. NOTE.2. A device in which the mandrel can be rotated at the chosen torque (see tables 2 and A.2), determined with an accuracy of 2.5 %, may also be used for this test. BSI 1996 BS 192 : Part 1 : 1996 List of references (see clause 2) Normative references BSI publications BRITISH STANDARDS INSTITUTION, London BS EN 10109 Metallic materials
