ASME B18.21.1-1999
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ID： |
D87A68571DF44ABF977EA22E2031CC56 |
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文件大小(MB)： |
1.24 |
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页数： |
27 |
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文件格式： |
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日期： |
2007-12-6 |
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购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
Copyright ASME International,Provided by IHS under license with ASME Licensee=Army Northwestern Div./7838506130, User=abc, abcdd,No reproduction or networking permitted without license from IHS Not for Resale, 09/05/2006 23:24:56 MDT,--```,,`,,,`````````,```,,,,`-`-`,,`,,`,`,,`---,The American Society of,Mechanical Engineers,A N A M E R I C A N A T I O N A L S T A N D A R D,LOCK WASHERS,(INEH SERIES),I,i,ASME B1 8.21.1 -1 MM9,(Revision of ASME B1 8.21.1 -1 884),Copyright ASME International,Provided by IHS under license with ASME Licensee=Army Northwestern Div./7838506130, User=abc, abcdd,No reproduction or networking permitted without license from IHS Not for Resale, 09/05/2006 23:24:56 MDT,--```,,`,,,`````````,```,,,,`-`-`,,`,,`,`,,`---,STD-ASME BLB-ZL-L-ENGL 3999 m 0759670 0635698 B13,Date of Issuance: February 11, 2000,This Standard will be revised when the Society approves the issuance of,a new edition. There will be no addenda or written interpretations of the,requirements of this Standard issued to this edition.,ASME is the registered trademark of The American Society of Mechanical Engineers.,This code or standard was developed under procedures accredited as meeting the criteria for,American National Standards. The Standards Committee that approved the code or standard,was balanced to assure that individuals from competent and concerned interests have had an,opportunity to participate. The proposed code or standard was made available for public review,and comment that provides an opportunity for additional public infproumt industry, academia,regulatory agencies, and the public-at-large.,ASME does not "approve," "rate," or "endorse" any item, construction, proprietary device,or activity.,ASME does not take any position with respect to the validity of any patent rights asserted in,connection with any items mentionedin this document, and does not undertake to insure anyone,utilizing a standard against liability for infringement of any applicable letters patent, nor assume,any such liability. Users of a code or standard are expressly advised that determination of the,validity of any such patent rights, and the risk of infringement of such rights, is entirely their,own responsibility.,Participation by federal agency representative(s) or person(s) affiliatedw ith industry is not to,be interpreted as government or industry endorsement of this code or standard.,ASME accepts responsibility for only those interpretations of this document issued in,accordance with the established ASME procedures and policies, which precludes the issuance,of interpretations by individuals.,No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.,The American Society of Mechanical Engineers,Three Park Avenue, New York, NY 10016-5990,Copyright Q 2000 by,THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS,All Rights Reserved,Printed in U.S.A.,Copyright ASME International,Provided by IHS under license with ASME Licensee=Army Northwestern Div./7838506130, User=abc, abcdd,No reproduction or networking permitted without license from IHS Not for Resale, 09/05/2006 23:24:56 MDT,--```,,`,,,`````````,```,,,,`-`-`,,`,,`,`,,`---,FOREWORD,American National Standards Committee B27 for the standardization of plain and lock,washers was organized in March 1926 as Sectional Committee B27 under the aegis of the,American Standards Association (later the United States of America Standards Institute and,as of October 6, 1969, the American National Standards Institute, Inc.), with the Society,of Automotive Engineers and the American Society of Mechanical Engineers as joint,sponsors. Since 1950, this Committee has been responsible for the standardization of washers,and machine rings.,In May 1928, the B27 Committee established two subcommittees to carry on development,work, Subcommittee 1* on plain washers and Subcommittee 2* on lock washers. A tentative,standard for helical spring-lock washers circulated for industry comment in November 193 1,but failed to achieve acceptance. Hence, Committee activity was dormant for some years.,In 1940, the B27 Committee was reorganized, and Subcommittee 2 proceeded to draft,a proposal covering three series of helical spring-lock washers designated light, medium,and heavy. In 1943, this proposal was amended to include the extra-heavy series washers,and, following approval by the B27 Committee and sponsor organizations, was accepted,as an American Standard under the designation ASA B27.1-1944.,During the ensuing years, minor refinements to the hardness requirements and methods,of test were consid……
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