1、BRITISH STANDARD BS EN ISO 887:2000 Incorporating corrigendum no. 1 Plain washers for metric bolts, screws and nuts for general purposes General plan The European Standard EN ISO 887:2000 has the status of a British Standard ICS 21.060.30 BS EN ISO 887:2000 This British Standard, having been prepare
2、d under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 BSI 2007 ISBN 0 580 36361 9 National foreword This British Standard was published by BSI. It is the UK implementation of EN ISO 887:2000,
3、 incorporating corrigendum January 2006. It is identical with ISO 887:2000, incorporating corrigendum January 2006. The start and finish of text introduced or altered by corrigendum is indicated in the text by tags . Text altered by ISO corrigendum January 2006 is indicated in the text by . The UK p
4、articipation in its preparation was entrusted to Technical Committee FME/9, Bolts, nuts and accessories (+QA mediumseriesforwashersofproductgradeAwithanominalthicknessequaltoorgreaterthan6mm,i.e.for nominalsizesW39mmandforwashersofproductgradeC. NOTE ThetolerancesforclearanceholesgiveninISO273forinf
5、ormationarenotapplicabletoplainwashersofproduct gradesAandC;seeclause6. EN ISO 887:20002 4 Outsidediameters Theoutsidediametersd 2 forwashers(seeFigure1)shallbechosenfromthevaluesgiveninTable1. Table1Dimensionsd 2 Valuesinmillimetres 2,5 8 18 39 80 125 185 3 9 20 44 85 135 200 3,5 10 22 50 92 140 21
6、0 4 11 24 56 98 145 220 4,5 12 28 60 105 160 230 5 14 30 66 110 165 240 6 15 34 72 115 175 250 7 16 37 78 120 180 5 Thicknesses Thewasherthicknessesh(seeFigure1)shallbechosenfromthevaluesgiveninTable2. Table2Dimensionsh Valuesinmillimetres 0,3 1 2 4 8 14 0,5 Textdeleted 2,5 5 10 16 0,8 1,6 3 6 12 18
7、 6 Tolerances ThetolerancesforwashersarespecifiedinISO4759-3. EN ISO 887:2000 3 7 Preferredcombinationsofplain-washerdimensions Thepreferredcombinationsofnominaldimensionsd 1 ,d 2 andhforplainwashersofproductgradesAandC(see Figure1)aregiveninTable3.Thewashersaredividedintofourseries:small,normal,lar
8、geandextralarge.These seriesarerelatedtothesizeoftheoutsidediameterd 2 . Figure1Dimensions EN ISO 887:20004 Table 3 Nominal dimensions of plain washers Dimensions en millimetres Nominal size Series Small Normal Large Extra large Product grade A Product grade A Product grade C Product grade A Product
9、 grade C Product grade C (Thread size, d) d 1 d 2 h ISO 7092 d 1 d 2 h ISO 7089 ISO 7090 d 1 d 2 h ISO 7091 d 1 d 2 h ISO 7093-1 d 1 d 2 h ISO 7093-2 d 1 d 2 h ISO 7094 1 1,1 2,5 0,3 1,1 3 0,3 1,2 3 0,3 1,2 1,3 3 0,3 1,3 3,5 0,3 1,4 3,5 0,3 1,4 1,5 3 0,3 1,5 4 0,3 1,6 4 0,3 1,6 1,7 3,5 0,3 X 1,7 4 0
10、,3 X 1,8 4 0,3 X 1,7 5 0,3 1,8 5 0,3 1,8 2 4 0,3 2 4,5 0,3 2,1 4,5 0,3 2 2,1 2 2,2 4,5 0,3 X 2,2 5 0,3 X 2,4 5 0,3 X 2,2 6 0,5 2,4 6 0,5 2,2 2,4 4,5 0,3 2,4 6 0,5 2,6 6 0,5 2,4 2,6 2,5 2,7 5 0,5 X 2,7 6 0,5 X 2,9 7 0,5 X 2,7 8 0,5 2,9 8 0,5 3 3,2 6 0,5 X 3,2 7 0,5 X 3,4 7 0,5 X 3,2 9 0,8 X 3,4 9 0,8
11、 X 3,5 3,7 7 0,5 X 3,7 8 0,5 X 3,9 8 0,5 X 3,7 11 0,8 X 3,9 11 0,8 X 4 4,3 8 0,5 X 4,3 9 0,8 X 4,5 9 0,8 X 4,3 12 1 X 4,5 12 1 X 4,5 4,8 9 0,8 4,8 10 0,8 5 10 0,8 4,8 15 1 5 15 1 5 5,3 9 1 X 5,3 10 1 X X 5,5 10 1 X 5,3 15 1 X 5,5 15 1 X 5,5 18 2 X 6 6,4 11 1,6 X 6,4 12 1,6 X X 6,6 12 1,6 X 6,4 18 1,
12、6 X 6,6 18 1,6 X 6,6 22 2 X 7 7,4 12 1,6 7,4 14 1,6 7,6 14 1,6 7,4 22 2 7,6 22 2 7,6 24 2 8 8,4 15 1,6 X 8,4 16 1,6 X X 9 16 1,6 X 8,4 24 2 X 9 24 2 X 9 28 3 X 10 10,5 18 1,6 X 10,5 20 2 X X 11 20 2 X 10,5 30 2,5 X 11 30 2,5 X 11 34 3 X 12 13 20 2 X 13 24 2,5 X X 13,5 24 2,5 X 13 37 3 X 13,5 37 3 X
13、13,5 44 4 X 14 15 24 2,5 X 15 28 2,5 X X 15,5 28 2,5 X 15 44 3 X 15,5 44 3 X 15,5 50 4 X 16 17 28 2,5 X 17 30 3 X X 17,5 30 3 X 17 50 3 X 17,5 50 3 X 17,5 56 5 X 18 19 30 3 X 19 34 3 X X 20 34 3 X 19 56 4 X 20 56 4 X 20 60 5 X 20 21 34 3 X 21 37 3 X X 22 37 3 X 21 60 4 X 22 60 4 X 22 72 6 X 22 23 37
14、 3 X 23 39 3 X X 24 39 3 X 23 66 5 X 24 66 5 X 24 80 6 X 24 25 39 4 X 25 44 4 X X 26 44 4 X 25 72 5 X 26 72 5 X 26 85 6 X 27 28 44 4 X 28 50 4 X X 30 50 4 X 30 85 6 X 30 85 6 X 30 98 6 X 30 31 50 4 X 31 56 4 X X 33 56 4 X 33 92 6 X 33 92 6 X 33 105 6 X 33 34 56 5 X 34 60 5 X X 36 60 5 X 36 105 6 X 3
15、6 105 6 X 36 115 8 X EN ISO 887:2000 5 36 37 60 5 X 37 66 5 X X 39 66 5 X 39 110 8 X 39 110 8 X 39 125 8 X 39 42 72 6 X X 42 72 6 X 42 120 8 42 120 8 42 140 10 42 45 78 8 X X 45 78 8 X 45 125 10 45 125 10 45 48 85 8 X X 48 85 8 X 48 135 10 48 135 10 48 52 92 8 X X 52 92 8 X 52 145 10 52 145 10 52 56
16、 98 8 X X 56 98 8 X 56 160 10 56 160 10 56 62 105 10 X X 62 105 10 X 60 66 110 10 X X 66 110 10 X 64 70 115 10 X X 70 115 10 X 68 74 120 10 74 120 10 72 78 125 10 78 125 10 76 82 135 10 82 135 10 80 86 140 12 86 140 12 85 91 145 12 91 145 12 90 96 160 12 96 160 12 95 101 165 12 101 165 12 100 107 17
17、5 14 107 175 14 105 112 180 14 112 180 14 110 117 185 14 117 185 14 115 122 200 14 122 200 14 120 127 210 16 127 210 16 125 132 220 16 132 220 16 130 137 230 16 137 230 16 140 147 240 18 147 240 18 150 157 250 18 157 250 18 NOTE The crosses indicate washers specified in the corresponding Internation
18、al Standards. EN ISO 887:20006 AnnexA (informative) Guidanceontheuseofplainwasherswithbolts,screwsandnuts Anoverviewofsuitablecombinationsofplainwashersandbolts,screwsornutsinrespectofproperty(hardness) classesandproductgradesisgiveninTableA.1. Moredetailedinformation,includingwasherseriesandboltors
19、crewheadshape,isgiveninthescopesofthe respectiveplain-washerproductstandards. TableA.1 Hardnessclass 100HV 200HV 300HV Washers Productgrade C A A Anoyesyes Bnoyesyes Bolts,screws,nuts Productgrade C yes no no u6.8 yes yes yes 8.8 no yes yes 9.8,10.9 no no yes Bolts,screws Propertyclass 12.9 no no no
20、 u6 yes yes yes 8noyesyes 9,10 no no yes Nuts Propertyclass 12 no no no Case-hardenedthreadrollingscrews yes yes yes Stainless-steelbolts,screwsandnuts yes EN ISO 887:2000 7 Bibliography 1ISO4759-3:2000, Tolerances for fasteners Part 3: Plain washers for bolts, screws and nuts Product grades A and C
21、. 2ISO7089:2000, Plain washers Normal series Product grade A. 3ISO7090:2000, Plain washers, chamfered Normal series Product grade A. 4ISO7091:2000, Plain washers Normal series Product grade C. 5ISO7092:2000, Plain washers Small series Product grade A. 6ISO7093-1:2000, Plain washers Large series Part
22、 1: Product grade A. 7ISO7093-2:2000, Plain washers Large series Part 2: Product grade C. 8ISO7094:2000, Plain washers Extra large series Product grade C. EN ISO 887:2000AnnexZA (normative) Normativereferencestointernationalpublications withtheirrelevantEuropeanpublications ThisEuropeanStandardincor
23、poratesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthe publicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsof anyofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitby am
24、endmentorrevision.Forundatedreferencesthelatesteditionofthepublicationreferredto applies. Publication Year Title EN Year ISO273 1979FastenersClearanceholesforboltsandscrew sEN20273 1991 EN ISO 887:2000 8 blankBS EN ISO 887:2000 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Instituti
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