ISO-7040-1997.pdf
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1、INTERNATIONAL STANDARD IS0 7040 Second edition 1997-11-15 Prevailing torque type hexagon nuts (with non-metallic insert), style 1 - Property classes 5,8 and 10 . a=400net: p=iso; o=isocs; sxentrat Printed in Switzerland ii -,-,- INTERNATIONAL STANDARD 0 is0 IS0 7040: 1997(E) Prevailing torque type h
2、exagon nuts (with non-metallic insert), style 1 - Property classes 5,8 and 10 1 scope This international Standard specifies the characteristics of prevailing torque type hexagon nuts (with non-metallic insert), style 1, with threads from M3 up to and including M36, in product grade A for threads up
3、to and including Ml6 and product grade B for threads above M16, and with property classes 5,8 and 10. NOTE - The dimensions of the nuts correspond to those given in IS0 4032 plus prevailing torque feature. If other specifications are required, they should be selected from existing International Stan
4、dards, for example IS0 261, IS0 965-2, IS0 2320 and IS0 4759-l. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards
5、are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 225:
6、1983, Fasteners - Bolts, screws, studs and nuts - Symbols and designations of dimensions. IS0 261 :- I, IS0 general purpose metric screw threads - General plan. GO 965-2:1 , IS0 general purpose metric screw threads - Tolerances - Part2: Limits of sizes for general purpose bolt and nut threads - Medi
7、um quality. IS0 2320: 1997, Prevailing torque type steel hexagon nuts - Mechanical and performance properties. IS0 3269: 1988, Fasteners -Acceptance inspection. IS0 4042:-3 , Fasteners - Electroplated coatings. IS0 4759-l:-“, Tolerances for fasteners - Part I: Bolts, screws, studs and nuts - Product
8、 grades A, B and CT. IS0 6157-2: 1995, Fasteners - Surface discontinuities - Part 2: Nuts. IS0 8992:1986, Fasteners - General requirements for bolts, screws, studs and nuts. I) To be published. (Revision of IS0 261:1973) 2) To be published. (Revision of IS0 965-2:1980) 3) To be published. (Revision
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