1、 STD-BSI BS EN IS0 7092-ENGL 2000 W Lb24bb9 OBb5402 785 W BRITISH STANDARD Plain washers - Small series - Product Grade A The European Standard EN IS0 7092:2 has the status of a British Standard ICs 21.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN IS0 7092:2000
2、BS EN IS0 7092:2000 been prepared under the direction of the Engineering AmdNo. Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 O BSI 09-2000 ISBN O 580 36148 9 National foreword Date I comments “his British Standard is the of
3、ficial English language version of EN IS0 70922000. It is identical with IS0 70922000. The UK participation in its preparation was entrusted by Technical Committee FME9, Bolts, Nuts - present to the responsible intematio - hexagon socket head cap screws in property classes up to and including 8.8, o
4、r made of stainless steel; - hexalobular socket head cap screws in property classes up to and including 8.8, or made of stainless steel; - case-hardened thread rolling screws with cheese heads. Washers of hardness class 300 HV are suitable for - hexagon socket head cap screws in property classes up
5、to and including 10.9; - hexalobular socket head cap screws in property classes up to and including 10.9. If dimensions other than those listed in this International Standard are required, they should be selected from those given in IS0 887. When soft material pieces are clamped, or large clearance
6、holes in the workpiece are used, the user should check the technical suitability of this type of washer. 1 _ STD-BSI 8s EN IS0 7092-ENGL 2000 I Lb24bb9 0865409 03T I I 0dl I IS0 7092:2000(E) /, t 2 Normative references The following normative documents contain provisions which, through reference in
7、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, patties to agreements based on this International Standard are encouraged to investigate the possibility of applying the
8、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 Standards. IS0 887:2000, Plain washers for metric bolts, screws and nu
9、ts for general purposes - General plan. IS0 3269:2000, fasteners - Acceptance inspection. IS0 3506-1 : 1 997, Mechanical properties of corrosion-resistant stainless-steel fasteners - Part 7: Bolts, screws and studs. IS0 4042:1999, Fasteners - Electroplated coatings. IS0 4759-3:2000, Tolerances for f
10、asteners - Part 3: Plain washers for bolts, screws and nuts - Product grades A and C. IS0 6507-1:1997, Metallic materials - Vickers hardness test - Part 7: Test method. IS0 1 0683-), Fasteners - Non-electrolytically applied zinc flake coatings. 3 Dimensions See Figure 1 and Tables 1 and 2. Dimension
11、s in millimetres, surface roughness values in micrometres J- Figure 1 - Dimensions for h 5 3 for h 3 1) To be published. 2 IS0 7092:2000(E) Nominal size I Clearance hole Table 1 - Preferred dimensions Dimensions in millimetres Outside diameter Thickness (Nominal thread diameter, d) nom. (min.) max.
12、1,84 2,34 2,84 3,38 4,48 5,48 6,62 8,62 10,77 13,27 17,27 21,33 25,33 31,39 37,62 nom. min. nom. max. min. (max.) 3,5 32 03 0,35 0,25 495 42 03 0,35 0,25 5,O 4,7 05 0,55 0,45 68 577 0,s 0,55 0,45 8,OO 7,64 03 0,55 0,45 9,00 8,64 1 l,1 03 11 ,o0 10,57 1,6 18 1,4 15,OO 14,57 133 1,8 1,4 18,OO 17,57 1,
13、6 13 1,4 20,oo 19,48 2 22 1,8 28,OO 27,48 23 2,7 23 34,OO 33,38 3 3,3 297 39,OO 38,38 4 4,3 3,7 50,OO 49,38 4 4,3 3,7 60,O 583 5 58 4,4 3 4 5 6 8 10 d2 3,20 4,30 5,30 6,40 8,40 10,50 h 1 12 13,OO 16 17,OO 20 21 ,o0 24 25,OO 30 31 ,O0 36 37,OO 3 Nominal size (Nominal thread diameter, d) 395 14 18 22
14、27 33 Clearance hole Outside diameter Thickness dl d2 h nom. max. nom. min. nom. max. min. (min.) 3,70 3,88 7,OO 6,64 095 0,55 0,45 15,OO 15,27 24,OO 23,48 295 2,7 23 19,oo 19,33 30,OO 29,48 3 3,3 2,7 23,OO 23,33 37,OO 36,3a 3 3,3 2,7 28,OO 28,33 44,oo 43,38 4 4,3 3,7 34,OO 34,62 56,O 548 5 5,6 4,4
15、STD-BSI BS EN IS0 7092-ENGL 2000 3624669 0866373 LBT IS0 7092:2000(E) Steel 4 Requirements and International Standards of reference Stainless steel See Table 3. 200 HV 300 HV 200 HV 300 HV to to 300 HV 370 HV Material a Grade International Standard Hardness class Mechanical properties Hardness range
16、 d Product grade Standard Tolerances international Surface finish 200 HV 200 HV to 300 HV Workmanship Acceptability A2 FI CI 1 A4 c4 1 ISO3506-1 A 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 supp
17、lier. Requirements for electroplating 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 electrop
18、lated or phosphated, they shall be suitably 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
19、 appear on the washer. Acceptance procedure 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 for
20、ce: HV 2 for nominal thickness h d 0,6 mm for nominal thickness 0,6 1,2 mm HV 10 HV 30 - 4 STD-BSI BS EN IS0 7092-ENGL 2000 II Lb24bb9 OBbbL74 Olib W IS0 7092:2000(E) 5 Designation EXAMPLE 1 is designated as follows: A small-series, product-grade-A plain washer made of steel, of nominal size 8 mm an
21、d hardness class 200 HV Washer IS0 7092-8-200 HV EXAMPLE 2 hardness class 200 HV is designated as follows: A small series, product-grade-A plain washer made of grade A2 stainless steel, of nominal size 8 rnm and Washer IS0 7092-8-200 HV-A2 5 Annex ZA (normative) Normative references to international
22、 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 text and the publications are listed hereafter. For dated references, s
23、ubsequent 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 applies. Publication Year Title EN Yea IS0 3506-1 1997 Mechanical properti
24、es 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: Plain washers for bolts, EN IS0 4759-3 2000 screws and nuts - Products grades
25、A and C IS0 6507-1 1997 Metallic materials - Vickers hardness test - Part 1: EN IS0 6507-1 1997 Test method BS EN IS0 7092:2000 BSI 389 Chiswick High Road London w4 4A.L BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents
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