1、STDmBSI BS EN IS0 7089-ENGL 2000 3b24bb9 O8b5381 120 = BRITISH STANDARD Plain washers - Normal series - Product grade A The European Standard EN IS0 70892000 has the status of a British Standard ICs 21.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW IS EN IS0 089:ZOOO S
2、TD-BSI BS EN IS0 3089-ENGL 2000 E Lh24bb9 OBb5382 Ob7 AmdNo. Date BS EN IS0 7089:2000 Comments National foreword This British Standard is the official English language version of EN IS0 70892000. It is identical with IS0 7089:2000. The UK participation in its preparation was entrusted by Technical C
3、ommittee FME/s, Bolts, Nuts and Accessories (+QA - present to the responsible internationallEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK A l
4、ist of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their correspondmg European
5、publications. The British Standards which implement these international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards El
6、ectronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This
7、 document comprises a front cover, an inside front cover, the ENISO title page, the ENISO foreword, the IS0 title page, pages ii and iu, a blank page, pages 1 to 5, the annex ZA page, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the docume
8、nt was last issued. 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 2000 0 BSI 09-2000 ISBN O 580 36119 5 EUROPEAN STANDARD NORME EUROPENNE EUROPISC
9、HE NORM EN IS0 7089 June 2000 ICs 21.060.30 English version Plain washers - Normal series - Product grade A (IS0 7089:2000) Rondelles plates - Srie normale - Grade A (IS0 7089:2000) Flache Scheiben - Normale Reihe - Produktklasse A (IS0 7089:2000) This European Standard was approved by CEN on 1 June
10、 2000. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtaine
11、d on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secreta
12、riat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN
13、 COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 E-1050 Brussels O 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 7089:2000 E STD-BSI
14、BS EN IS0 7089-ENGL 2000 = Lh2iihh9 OBh5384 93T EN IS0 7089:ZOOO Foreword The text of the International Standard IS0 7089:2000 has been prepared by Technical Committee ISOTTC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners and access
15、ories“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2000, and conflicting national standards shall be withdrawn at the latest by December 2000
16、. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Po
17、rtugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard IS0 7089:2000 was approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). STD-BSI BS
18、 EN IS0 7089-ENGL 2000 Lb24bb9 08bS385 87b m EN IS0 7089:2000 INTERNATIONAL STANDARD IS0 7089 Second edition 2000-06-01 Plain washers - Normal series - Product grade A Rondelles plates - Srie normale - Grade A Reference number IS0 7089:2000(E) STD.BS1 BS EN IS0 7089-ENGL 2000 Lb24bb OBb538b 702 m EN
19、 IS0 7089:2000 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subjec
20、t for which a technical 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 pari in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC)
21、 on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Pari 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internati
22、onal 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 International Standard may be the subject of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. I
23、nternational Standard IS0 7089 was prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cancels and replaces the first edition (IS0 7089:1983), which has been technically revised. iii STD-BSI BS EN IS0 7087-ENGL 2000 = Lb24bb O8b5387 b49 m EN IS0 7089:ZOOO Plain washers - Normal
24、series - Product grade A 1 Scope This International Standard specifies the characteristics of normal-series, product-grade-A plain washers in the 200 HV and 300 HV hardness classes and of nominal sizes (nominal thread diameters) ranging from 1,6 mm to 64 mm inclusive. Washers of hardness class 200 H
25、V are suitable for - hexagon bolts and screws of product grades A and B in property classes up to and including 8.8: - hexagon nuts of product grades A and B in property classes up to and including 8; - hexagon bolts, screws and nuts of stainless steel of similar chemical composition: - case-hardene
26、d thread rolling screws. Washers of hardness class 300 HV are suitable for - hexagon bolts and screws of product grades A and B in property classes up to and including 10.9; - hexagon nuts of product grades A and B in property classes up to and including 1 O. If dimensions other than those listed in
27、 this International Standard are required, they should be selected from those given in IS0 887. When soft material pieces are clamped, or large clearance holes in the workpiece are used, the user should check the technical suitability of this type of washer. 1 STD-BSI BS EN IS0 7089-ENGL 2000 It6246
28、69 0865388 585 EN IS0 7089:2000 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not a
29、pply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members o
30、f IS0 and IEC maintain registers of currently valid International Standards. IS0 887:2000, Plain washers for metric bolts, screws and nuts for general purposes - General plan. IS0 3269:2000, Fasteners - Acceptance inspection. IS0 3506-1 : 1 997, Mechanical properties of corrosion-resistant stainless
31、-steel fasteners - Part I: Bolts, screws and studs. IS0 4042: 1 999, Fasteners - Electroplated coatings. IS0 4759-3:2000, Tolerances for fasteners - Patt 3: Plain washers for bolts, screws and nuts - Product grades A and C. IS0 6507-1 :i 997, Metallic materials - Vickers hardness test - Part 1: Test
32、 method. IS0 1 0683-1 1, Fasteners - Non-electrolytically applied zinc flake coatings. 3 Dimensions See Figure 1 and Tables i and 2. Dimensions in millimetres, surface roughness values in micrometres Figure 1 - Dimensions 1) To be published. 2 STD-BSI BS EN IS0 7089-ENCL 2000 1624bb9 08b5389 411 = O
33、utside diameter Thickness 4ominal size (Nominal thread I nom. Clearance hole dl diameter, d) I (min.) d2 min. 2.5 2.70 h nom. I max. I min. I 3 4 5 3,20 4.30 5,30 6 8 10 6,40 8,40 10,50 max. 12 16 20 24 30 36 42 48 56 64 I ,84 2,34 2.84 13,OO 17,OO 21 ,o0 25,OO 31 ,O0 37,OO 45,OO 52,OO 62,OO 70.00 3
34、,38 4,48 548 43,38 55,26 643 76,8 90,6 103,6 113,6 6,62 8,62 10,77 4 43 397 4 4,3 3,7 5 56 4,4 8 9 7 8 9 7 10 11 9 10 11 9 13,27 17,27 21 -33 Nominal size 25,33 31,39 37,62 Clearance hole Outside diameter Thickness 45,62 52,74 62,74 70,74 (Nominal thread diameter, d) 335 14 18 22 27 33 39 45 52 60 E
35、N IS0 7089:2000 dl d2 h nom. max. nom. min. nom. max. min. (min.) (ma.) 3,70 3,88 8,OO 7,64 OS 0,55 0,45 15,OO 15,27 28,OO 27,48 23 2,7 23 19,oo 19,33 34,OO 33,38 3 373 2,7 23,OO 23,33 39,OO 38,38 3 393 2,7 28,OO 28,33 50,OO 49,38 4 4,3 3,7 34,OO 34,62 60,O 58,8 5 56 4,4 42,OO 42,62 72,O 70,8 6 66 5
36、,4 48,OO 48,62 85,O 83,6 8 9 7 56,OO 56,74 98,O 96,6 8 9 7 66,OO 66,74 11 0,o 108,6 10 11 9 nom. (ma.) 7,OO 9,oo 10,oo 12,oo 16,OO 20,oo 24,OO 30,OO 37,OO 44,oo 56,OO 66,O 78,O 92,O 105,O 1150 3,7 I 0,3 I 0,35-1 0,25 0,25 I I 0,45 36,38 I 3 I 3.3 1 2,7 Table 2 - Non-preferred dimensions Dimensions i
37、n millimetres 3 EN IS0 7089:2000 4 Requirements and International Standards of reference See Table 3. I Acceptability Steel I Stainless steel A2 F1 C1 A4 c4 I ISO3506-1 200 HV 300 HV 200 HV 200 HV to 300 HV 300 HV to 370 HV 200 HV to 300 HV A Material a Grade International Standard Hardness class Me
38、chanical properties Hardness range d Product grade Standard Toerances international Surface finish Workmanship IS0 4759-3 Plain: .e. washers to be supplied in natural finish, treated with a protective lubricant or with other coatings as agreed by customer and supplier. Requirements for electroplatin
39、g covered in IS0 4042. Requirements for non-electrolytically applied zinc flake coatings covered in IS0 10683. For hardened and tempered washers, appropriate plating or coating processes should be employed to avoid hydrogen embrittlement. When washers are electroplated or phosphated, they shall be s
40、uitably treated immediately after plating or coating to obviate detrimental hydrogen embrittlement. All tolerances shall apply prior to the application of a plating or coating. Parts shall be free of irregularities or detrimental defects. No protruding burrs shall appear on the washer. Acceptance pr
41、ocedure covered in IS0 3269. Plain: .e. washers shall be supplied in natural finish. a Other metallic materials as agreed between customer and supplier. Related to chemical composition only. Hardened and tempered. Hardness testing according to IS0 6507-1. Test force: HV 2 for nominal thickness h G 0
42、,6 mm for nominal thickness 0,6 e h G 1,2 mm for nominal thickness h 1,2 mm HV 10 HV 30 4 STD.BSI BS EN IS0 7087-ENGL 2000 111 Lb24bb OBbbL70 470 = EN IS0 7089:2000 5 Designation EXAMPLE 1 200 HV is designated as follows: A normal-series, product-grade-A plain washer made of steel, of nominal size 8
43、 mm and hardness class Washer IS0 7089-8-200 HV EXAMPLE 2 hardness class 200 HV is designated as follows: A normal-series, product-grade-A plain washer made of grade A2 stainless steel, of nominal size 8 rnm and Washer IS0 7089-8-200 HV-A2 5 STD-BSI BS EN IS0 7089-ENGL 2000 I Lb24bb 08bbL7L 307 EN I
44、S0 7089:2000 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the
45、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 incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to app
46、lies. Publication Year Title - EN Year IS0 3506-1 1997 Mechanical properties of corrosion-resistant stainless-steel EN IS0 3506-1 1997 fasteners - Part 1: Bolts, screws and studs IS0 4042 1999 Fasteners - Electroplated coatings EN IS0 4042 1999 IS0 4759-3 2000 Tolerances for fasteners - Part 3: Plai
47、n washers for bolts, EN IS0 4759-3 2000 screws and nuts - Products grades A and C IS0 6507-1 1997 Metallic materials - Vickers hardness test - Part 1: EN IS0 6507-1 1997 Test method BS EN IS0 7089:ZOOO BSI 389 Chiswick High Road London w4 4AL STD-BSI BS EN IS0 7089-ENGL 2000 H 3624669 0866372 243 D
48、BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the intemational level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. U
49、sers of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone ndmg an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel O20 8996 9OOO. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive
