JIS-B-1257-2004-ENG.pdf
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1、IS JAPANESE IN DUSTRIAL STANDARD Translated and Published by Japanese Standards Association JIS B 1257:2004 (IS0 10669 : 1999) Plain washers for tapping screw and washer assemblies - Normal and large series - Product grade A ICs 21.060.30 Reference number : JIS B 1257 : 2004 (E) PROTECTED BY COPYRIG
2、HT 5s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:06:13 MSTNo reproduction or networking permitted without license from IHS -,-,- Foreword This translation has been made based on the
3、 original Japanese Indus- trial Standard established by the Minister of Economy, Trade and Indus- try through deliberations at the Japanese Industrial Standards Commit- tee according to the proposal of establishing a Japanese Industrial Stan- dard from The Japan Research Institute for Screw Threads
4、and Fasten- ers (JFR1)Japanese Standards Association (JSA), with a draft of Indus- trial Standard based on the provision of Article 12 Clause 1 of the Indus- trial Standardization Law. This Standard has been made based on IS0 10669:1999, Plain washers for tapping screw and washer assemblies -Normal
5、and large series - Product grade A for the purposes of making it easier to compare this Standard with International Standard; to prepare Japanese Industrial Standard conforming with International Standard; and to propose a draft of an International Standard which is based on Japanese Industrial Stan
6、- dard. Attention is drawn to the possibility that some parts of this Standard may conflict with a patent right, application for a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have technical properties. The
7、 relevant Minister and the Japanese Industrial Standards Committee are not responsible for identifying the patent right, application for a patent after opening to the public, utility model right or application for registra- tion of utility model after opening to the public which have the said tech-
8、nical properties. Date of Establishment: 2004-11-20 Date of Public Notice in Official Gazette: Investigated by: 2004-11-22 Japanese Industrial Standards Committee Standards Board Technical Committee on Machine Elements JIS B 1257 : 2004, First English edition published in 2005-04 Translated and publ
9、ished by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2005 All rights reserved. No part of this publication may be reproduced or utilized in any form or by
10、 any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan HB PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie
11、 Not for Resale, 03/10/2007 22:06:13 MSTNo reproduction or networking permitted without license from IHS -,-,- B 1257 2004 (IS0 10669 : 1999) Contents Page Introduction 1 Scope 2 Normative references 3 Classification . 4 Dimensions 4.1 Type N, normal series 4.2 Type L, large series 5 Specifications
12、and reference International Standards 6 Designation . (i) PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:06:13 MSTNo reproduction or networking permitted without
13、license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 1257 : 2004 (IS0 10669 : 1999) Plain washers for tapping screw and washer assemblies- Normal and large series - Product grade A Introduction This Japanese Industrial Standard has been prepared based on the first edition of IS0 10669 Plain was
14、hers for tapping screw and washer assemblies - Normal and large series-Product grade A published in 1999 without modifying the technical contents. 1 uct grade A for tapping screw and washer assemblies in accordance with JIS B 1129. Scope This Standard specifies the characteristics of plain steel was
15、hers of prod- NOTE : The International Standard corresponding to this Standard is as follows. In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to
16、ISO/ IEC Guide 21. IS0 10669: 1999 Plain washers for tapping screw and washer assemblies -Normal and large series -Product grade A (IDT) 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recen
17、t editions of the standards (including amendments) indicated below shall be applied. JIS B 1022 Tolerances for fasteners-Part 3: Plain washers for bolts, screws and nuts -Product grades A and C IS0 4759-311991 Tolerances for fasteners -Part 3: Plain washers for bolts, screws and nuts -Product grades
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