ASME_B18.5.2.3M-1990.pdf

i-c-?Round Head Square Neck Bolts With Large Head(Metric Series)GOVERNMENT KEY WORDS BOLT,ROUND LARGE HEAD,SQUARE NECK-METRIC AN AMERICAN NATIONAL STANDARD Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B18-5.2.3M 90=0759b70 0500524 T AN AMERICANNATIONAL STANDARD Round Square.Neck With Large Head Bolts Head(Metric Series)ASME B I 8.5.2.3M-I 990 The American Society of Mechanical Engineers.345 East 47th Street,New York,N.Y.10017-Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-.ASME B18.5.2.3M 90 0759670 0500525 I W Date of Issuance:February 5,1991 This Standard will be revised when the Society approves the issuance of a new edition.There will be no addenda issued to this edition.ASME will issue written replies to inquiries concerning interpretation of tech-nical aspects of this Standard.The interpretations are not part of the Standard.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accreditd as meeting the criteria for American National Standards.The Consensus 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 which provides an opportunity for additional public input from 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 mentioned in 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 u code or standard are expressly advised that determination of the validity of any such patent rights,and the risk o f infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or percon(c)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.ASME accepts respQnSibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual vol-unteers.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.Copyright.1991 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 Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-O O FOREWORD.(This Foreword is not part of ASME 818.5.2.3M-1990.)ASME Standards Committee I318 for the Standardization of Bolts,Nuts,Rivets,Screws,Washers,and Similar Fasteners(formerly American Natio.nal Standards Committee B18),was originated in March 1922 as Sectional Cornmittee B18 under the aegis of the American Engineering Standards Committee(later the American Standards Association,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.Subcommittee 2,5,and 6(later redesignated Subcommittee 9)were subsequently established and charged with the responsibilities for the technical content of standards for the external drive bolts and nuts,round unslotted head bolts,and plow bolts,respectively.Subcommittee 9 was merged into Subcommittee 5 in 1977,and Subcommittee 5 was merged into Subcommittee 2 in 1987.Subcommittee 2 recognized a need for metric square neck.bolts with large heads for applications in soft wood and similar materials,and prepared this Standard based on IS0 8677-1986,“Cup Head Square Neck Bolts with Large Head-Product Grade C.”This Standard was approved by letter ballot of Committee 18 on February 3,1989.It was subsequently approved by ASME and submitted to the American National Standards Institute for approval as an American National Standard.This was granted on October 25,1990.iii.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME BL8.5.2.3M 90 W 0759670 0500527 5=ASME STANDARDS COMMITTEE BI8 Standardization of Bolts,Nuts,Rivets,Screws,Washers,and Similar Fasteners(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERS J.A.Trilling,Chairman D.A.Clever,Vice Chairman E.Schwartz,Vice Chairman R.McGinnis,Secretary COMMITTEE PERS