1、A M E R I C A N N A T I O N A L S T A N D A R D Large Rivets ANSI B18.1.2-1972 1/2 Inch Nominal Diameter and Larger-.(REVISION OF 818.4-1960)_-.R REAFFIRMED 1995 FOR CURRENT COMMITTEE PERSONNEL PLEASE SEE ASME MANUAL AS-11 SECRETARIAT SOCIETY OF AUTOMOTIVE ENGINEERS THE AMERICAN SOCIETY OF MECHANICA
2、L ENGINEERS PUBLISHED BY T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S United Engineering Center 345 East 47th Street New York,N.Y.1001 7 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User
3、.No further reproduction or distribution is permitted.Uncontrolled when printed.REAFFIRMED 2001FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgAny part of this standard may be quoted.Credit linesshould read:Extracted from American National Standard,Large Rivets(ANSI B 18.1.2-19721,with the pe
4、rmission of the publisher The American Society of Mechanical Engineers,United Engineering Center,345 East 47th Street,New York,N.Y.10017.THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Copyright 0,1972,by Printed in U.S.A.II Copyrighted material licensed to Stanford University by Thomson Scientific(),d
5、ownloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.American National Standards Committee 818 for the standardization of bolts,screws,nuts,rivets and similar fasteners was organized in March 1922,as Sectional Com,mittee
6、818,under the aegis of the American Engineering Standards Committee (later the American Standards Association,then 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 Societ
7、y of Mechanical Engi-neers as joint sponsors.Subcommittee 1 was subsequently appointed and charged with responsibility for the standardization of rivets.Initial efforts of the Subcommittee were directed at development of a standard covering solid rivets of less than 1/2 inch nominal diameter which w
8、as approved and designated 8 18a-1927.This was followed by a standard covering tinners,coop.ers and belt rivets that was adopted under the designation 8189-1928.Extensive research,periods of experimentation,and consultation with the American Society for Testing and Materials and the Boiler Code Comm
9、ittee of the American Society of Mechanical Engineers during the ensuing years culminated in Subcommittee acceptance,in 1936,of a proposal covering rivets 1/2 inch nominal size and larger.This proposal,following approval by the Sectional Committee and sponsor organ-izations was designated an America
10、n Standard,818.4-1937,in March of 1937.Following reorganization of Sectional Committee 818,in 1947,Subcommittee 1 was requested to review the documents under its jurisdiction to bring them up to date and,as necessary,develop them into complete product standards.A thorough study of the 818.4 standard
11、 was conducted over meetings of the Subcommittee held on October 9,1947,June 4,1948 and December 1,1948.This resulted in a recommen-dation that the pan head rivets should be changed to conform with the American Bureau of Shipping and U.S.Navy design which all manufacturers,except one,were found to b
12、e producing.A proposal dated September 1959,reflecting this change and additional refinements was approved by letter ballot of the 818 Committee and sponsors,and presented to the American Standards Association for approval and designa-tion as an American Standard.This was given on August 30,1950.The
13、 818 Committee by letter ballot of August13,1956 approved reaffirmation of the 818.4-1950 docu-ment and,following approval by the sponsors,this status was confirmed by the American Standards Association on May 27,1957.A proposed revision dated August,1959 was approved by the Sectional Committee,the
14、sponsors,and the American Standards Association and was designated an American Standard on March 9,1960.During 1970,Subcommittee 1 developed a proposed revision incorporating changes to the nomenclature and the method of dimensioning applicable to countersunk type heads and a complete editorial reva
15、mping of the format to conform with related documents.Following letter ballot approval by the 818 Committee and sponsor organizations,the revision was submitted to the American National Standards Institute and was designated an American National Standard,ANSI 818.1.2-1972,on January 28,1972.Ill Copy
16、righted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.AMERICAN NATIONAL STANDARDS COMMITTEE 818 Standardization of Bolts,Nuts,Rivets,Screws and Similar Fasteners OFFICERS R.P.Trowbridge,Chairman F.V.Kupchak,Vice-Chairman R.B.Belford,Secretary COMMITTEE PERSONNEL AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA J.F.Cramer,The Boeing Company,Seattle,Was
