1、 STD-BSI BS EN IS0 7091-ENGL 2000 Lb24bb ilbb557 433 m BRITISH STANDARD Plain washers - Normal series - Product Grade C The European Standard EN IS0 70912000 has the status of a British Standard ICs 21.060.30 BS EN IS0 7091:ZOOO NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMIITED BY COPYRIGHT LAW
2、STD.BS1 BS EN IS0 7091-ENGL 2000 1b2rlbb9 08bbSb0 155 m been prepared under the direction of the Engineering Amd.No. Date Sector Committee, was published under the authority of the Standards Committee and comes into effect on 16 September 2000 O BSI 09-2000 BS EN IS0 7091:2000 Comments National fore
3、word This British Standard is the official English language version of EN IS0 7091:2000. It is identical with IS0 7091:20oO. The UK participation in its preparation was entrusted by Technical Committee FME/s, Bolts, Nuts - present to the responsible internationalEuropean committee any enquiries on t
4、he interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is
5、 drawn to the fact that CEN and CENELEC Stan - hexagon nuts of product grade C in property classes up to and including 6; - case-hardened thread rolling screws. If dimensions other than those listed in this International Standard are required, they should be selected from those given in IS0 887. Whe
6、n 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 7091i-ENGL 2000 b lb24bh9 Ohb5bb b73 m 1x9 M:PWOO P I y/ dl d2 I IC I a- * - t 2 Normative references The following norm
7、ative 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 apply. However, parties to agreements based on this International Standard
8、 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 of IS0 and IEC maintain registers of currently valid International Standar
9、ds. IS0 887:2000, Plain washers for metric bolts, screws and nuts for general purposes - General plan. IS0 3269:2000, Fasteners - Acceptance inspection. IS0 4042:1999, Fasteners - Electroplated coatings. IS0 4759-3:2000, Tolerances for fasteners - Part 3: Plain washers for bolts, screws and nuts - P
10、roduct grades A and C. IS0 6507-1:1997, Metallic materials - Vickers hardness test - Part I: Test method. IS0 10683-), fasteners - Non-electrolytically applied zinc flake coatings. 3 Dimensions See Figure 1 and Tables 1 and 2. Figure 1 - Dimensions 1) To be published. 2 Table 1 - Preferred dimension
11、s Dimensions in millimetres Nominal size (Nominal thread diameter, d) 196 2 295 3 4 5 6 8 10 12 16 20 24 30 36 42 48 56 64 I Clearance hole Outside diameter Thickness dl d2 h nom. max. nom. min. nom. max. min. (min.) (ma4 1,80 2,05 4,OO 3,25 033 094 02 2,40 2,65 5,OO 4,25 0,3 0,4 02 2,90 3,15 6,OO 5
12、,25 03 0,6 0,4 3,4 3,7 7,O 6,1 03 096 094 4,5 43 9,o 8,1 03 1 ,o 0,6 595 53 10,o $1 1 12 O, 8 6,60 6,96 12,o 10,9 1,6 13 13 9,oo 9,36 16,O 14,9 1,6 13 13 1 1 ,o0 11,43 20,o 18,7 2 2,3 1,7 13,50 13,93 24,O 22,7 23 2,8 22 17,50 17,93 30,O 28,7 3 33 24 22,oo 22,52 37,O 35,4 3 36 2,4 26,OO 26,52 444 42,
13、4 4 46 3,4 33,OO 33,62 56,O 54,l 4 46 3,4 39 40 66,O 64,l 5 6 4 45 46 78,O 76,l 8 92 63 52,O 53,2 92,O 89,8 8 92 63 62,O 63,2 105,O 102,8 10 11,2 8,8 70,O 71,2 1 15,O 112,8 10 11,2 88 Nominal size (Nominal thread diameter, d) 395 14 18 22 27 33 39 45 52 60 3 Clearance hole Outside diameter Thickness
14、 dl d2 h nom. max. nom. min. nom. max. min. (min.) (ma.) 3,9 42 8 7,1 03 0,6 0,4 15,5 15,93 28 26,7 23 2,8 22 20 20,43 34 32,4 3 33 2,4 24 24,52 39 37,4 3 396 294 30 30,52 50 48,4 4 4,6 3,4 36 37 60 58,l 5 6 4 42 43 72 70,l 6 7 5 48 49 85 82,8 8 92 63 56 57,2 98 95,8 8 92 6,8 66 67,2 110 107,8 10 11
15、,2 838 STDBBSI BS EN IS0 7091-ENGL 2000 1624bb9 Obb5b 44b m 4 Requirements and International Standards of reference See Table 3. Table 3 - Specifications and International Standards of reference Material a Hardness class Mechanical properties Hardness range Product grade International Standard Toler
16、ances Surface finish Workmanship Acceptability Steel 100 HV 100 HV to 200 HV C 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 electroplating covered in IS0 4042. Requireme
17、nts for non-electrolytically applied zinc flake coatings covered in IS0 10683. 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 procedure covered in IS
18、0 3269. a Other metallic materials as agreed between customer and supplier. Hardness testing according to IS0 6507-1. Test force: HV 2 for nominal thickness h 1,2 mm HV 1 O HV 30 5 Designation EXAMPLE 1 O0 HV is designated as follows: A normal-series, product-grade-(; plain washer made of steel, of
19、nominal size 8 mm and hardness class Washer IS0 7091 -8-1 O0 HV 4 STDmBSI BS EN IS0 7091-ENGL 2000 m Lb24ab9 Obb569 382 m EN IS0 7091:2000 Annex Zi (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or
20、 undated reference, 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
21、when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. Publication Year Title - EN Year IS0 4042 1999 Fasteners - Electroplated coatings EN IS0 4042 1999 IS0 4759-3 2000 Tolerances for fasteners - Part 3: Plain washers for
22、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 STD.BS1 BS EN IS0 7091-ENGL 2000 1624bb9 0866570 OT4 = BS EN IS0 7091:ZOOO BSI 389 Chiswick High Road London w4 4AL BSI - British S
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