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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 ? Licensed Copy: London South Bank University, London South B
2、ank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 887:2000 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 20
3、00 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, incorporating corrigendum January 2006. It is identical with ISO 887:2000, incorporating corrigendum January 2006. The start and finish of text introduced or a
4、ltered by corrigendum is indicated in the text by tags . Text altered by ISO corrigendum January 2006 is indicated in the text by . The UK participation in its preparation was entrusted to Technical Committee FME/9, Bolts, nuts and accessories (+QA ?medium series for washers of product grade A with
5、a nominal thickness equal to or greater than 6 mm, i.e. for nominal sizesW39 mm and for washers of product grade C. NOTE?The tolerances for clearance holes given in ISO 273 for information are not applicable to plain washers of product grades A and C; see clause 6. EN ISO 887:2000 Licensed Copy: Lon
6、don South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2? 4?Outside diameters The outside diameters d2for washers (see Figure 1) shall be chosen from the values given in Table 1. Table 1 Dimensions d2 Values in millimetres 2,5?8?18?39?
7、80?125?185 3?9?20?44?85?135?200 3,5?10?22?50?92?140?210 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 The washer thicknesses h (see Figure 1) shall be chosen from the values given in Table 2. Table 2 Dimensions h Values
8、in millimetres 0,3?1?2?4?8?14 0,5?Text deleted?2,5?5?10?16 0,8?1,6?3?6?12?18 6?Tolerances The tolerances for washers are specified in ISO 4759-3. EN ISO 887:2000 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI
9、?3 7?Preferred combinations of plain-washer dimensions The preferred combinations of nominal dimensions d1, d2and h for plain washers of product grades A and C (see Figure 1) are given in Table 3. The washers are divided into four series: small, normal, large and extra large. These series are relate
10、d to the size of the outside diameter d2. Figure 1 Dimensions EN ISO 887:2000 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4? Table 3 Nominal dimensions of plain washers Dimensions en millimetres Nominal siz
11、e Series SmallNormalLargeExtra large Product grade AProduct grade AProduct grade CProduct grade AProduct grade CProduct grade C (Thread size, d) d1d2 h ISO 7092 d1d2 h ISO 7089 ISO 7090 d1d2 h ISO 7091 d1d2 h ISO 7093-1 d1d2 h ISO 7093-2 d1d2 h ISO 7094 11,12,50,31,130,31,230,3 1,21,330,31,33,50,31,
12、43,50,3 1,41,530,31,540,31,640,3 1,61,73,50,3X1,740,3X1,840,3X1,750,31,850,3 1,8240,324,50,32,14,50,322,1 22,24,50,3X2,250,3X2,450,3X2,260,52,460,5 2,22,44,50,32,460,52,660,52,42,6 2,52,750,5X2,760,5X2,970,5X2,780,52,980,5 33,260,5X3,270,5X3,470,5X3,290,8X3,490,8X 3,53,770,5X3,780,5X3,980,5X3,7110,8
13、X3,9110,8X 44,380,5X4,390,8X4,590,8X4,3121X4,5121X 4,54,890,84,8100,85100,84,81515151 55,391X5,3101XX5,5101X5,3151X5,5151X5,5182X 66,4111,6X6,4121,6XX6,6121,6X6,4181,6X6,6181,6X6,6222X 77,4121,67,4141,67,6141,67,42227,62227,6242 88,4151,6X8,4161,6XX9161,6X8,4242X9242X9283X 1010,5181,6X10,5202XX11202
14、X10,5302,5X11302,5X11343X 1213202X13242,5XX13,5242,5X13373X13,5373X13,5444X 1415242,5X15282,5XX15,5282,5X15443X15,5443X15,5504X 1617282,5X17303XX17,5303X17503X17,5503X17,5565X 1819303X19343XX20343X19564X20564X20605X 2021343X21373XX22373X21604X22604X22726X 2223373X23393XX24393X23665X24665X24806X 2425
15、394X25444XX26444X25725X26725X26856X 2728444X28504XX30504X30856X30856X30986X 3031504X31564XX33564X33926X33926X331056X 3334565X34605XX36605X361056X361056X361158X EN ISO 887:2000 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled
16、Copy, (c) BSI ?5 3637605X37665XX39665X391108X391108X391258X 3942726XX42726X4212084212084214010 4245788XX45788X45125104512510 4548858XX48858X48135104813510 4852928XX52928X52145105214510 5256988XX56988X56160105616010 566210510XX6210510X 606611010XX6611010X 647011510XX7011510X 6874120107412010 72781251
17、07812510 7682135108213510 8086140128614012 8591145129114512 9096160129616012 951011651210116512 1001071751410717514 1051121801411218014 1101171851411718514 1151222001412220014 1201272101612721016 1251322201613222016 1301372301613723016 1401472401814724018 1501572501815725018 NOTEThe crosses indicate
18、 washers specified in the corresponding International Standards. EN ISO 887:2000 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 6? Annex A (informative) Guidance on the use of plain washers with bolts, screws
19、and nuts An overview of suitable combinations of plain washers and bolts, screws or nuts in respect of property (hardness) classes and product grades is given in Table A.1. More detailed information, including washer series and bolt or screw head shape, is given in the scopes of the respective plain
20、-washer product standards. Table A.1 Hardness class?100 HV?200 HV?300 HV Washers Product grade?C?A?A Anoyesyes BnoyesyesBolts, screws, nuts?Product grade C?yes?no?no u 6.8?yes?yes?yes 8.8?no?yes?yes 9.8, 10.9?no?no?yes Bolts, screws?Property class 12.9?no?no?no u 6? yes?yes?yes 8noyesyes 9, 10?no?no
21、?yes Nuts?Property class 12?no?no?no Case-hardened thread rolling screws?yes?yes?yes Stainless-steel bolts, screws and nuts?yes EN ISO 887:2000 Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ?7 Bibliography 1
22、ISO 4759-3:2000,Tolerances for fasteners Part 3: Plain washers for bolts, screws and nuts Product grades A and C. 2 ISO 7089:2000,Plain washers Normal series Product grade A. 3 ISO 7090:2000,Plain washers, chamfered Normal series Product grade A. 4 ISO 7091:2000,Plain washers Normal series Product g
23、rade C. 5 ISO 7092:2000,Plain washers Small series Product grade A. 6 ISO 7093-1:2000,Plain washers Large series Part 1: Product grade A. 7 ISO 7093-2:2000,Plain washers Large series Part 2: Product grade C. 8 ISO 7094:2000,Plain washers Extra large series Product grade C. EN ISO 887:2000 Licensed C
24、opy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated re
25、ference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorp
26、orated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. Publication Year TitleENYear ISO 273 1979 Fasteners - Clearance holes for bolts and screws EN 20273 1991 EN ISO 887:2000 8 Licensed Copy: London South Bank University, London Sout
27、h Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Mon May 07 12:05:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 887:2000 BSI 389 Chiswick High Road London W4 4AL BSI British St
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