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 REAFFIRMED 2021Any part of this standard may be quoted.Credit linesshould read:Extracted from American National Standard,Large Riv
3、ets(ANSI B 18.1.2-19721,with the permission 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 American National Standards Committee 818 f
4、or the standardization of bolts,screws,nuts,rivets and similar fasteners was organized in March 1922,as Sectional Com,mittee 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 O
5、ctober 6,1969,the American National Standards Institute,Inc.)with the Society of Automotive Engineers and the American Society 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
6、 Subcommittee were directed at development of a standard covering solid rivets of less than 1/2 inch nominal diameter which was 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 rese
7、arch,periods of experimentation,and consultation with the American Society for Testing and Materials and the Boiler Code Committee 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 siz
8、e and larger.This proposal,following approval by the Sectional Committee and sponsor organ-izations was designated an American 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
9、to bring them up to date and,as necessary,develop them into complete product standards.A thorough study of the 818.4 standard 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 c
10、hanged to conform with the American Bureau of Shipping and U.S.Navy design which all manufacturers,except one,were found to be 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
11、the American Standards Association for approval and designa-tion as an American Standard.This was given on August 30,1950.The 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 Ame
12、rican Standards Association on May 27,1957.A proposed revision dated August,1959 was approved by the Sectional Committee,the 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
13、changes to the nomenclature and the method of dimensioning applicable to countersunk type heads and a complete editorial revamping 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 America
14、n National Standards Institute and was designated an American National Standard,ANSI 818.1.2-1972,on January 28,1972.Ill 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,
15、Secretary COMMITTEE PERSONNEL AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA J.F.Cramer,The Boeing Company,Seattle,Washington 5.J.Turek,Grumman Aircraft Engineering Corporation,Bethpage,Long Island,New York AMERICAN INSTITUTE OF INDUSTRIAL ENGINEERS R.T.Kelly,Hitchcock Publishing Company,Wheaton,Illino
16、is AMERICAN SOCIETY FOR TESTING AND MATERIALS J.w.Caum,American Society for Testing and Materials,Philadelphia,Pennsylvania AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS F.C.Ewert,Deere&Company,Moline,Illinois J.H.Zich,Alternate,Ford Motor Company,Birmingham,Michigan AMERICAN SOCIETY OF MECHANICAL ENGINEERS,THE A.R.Machell,Jr.,Xerox Corporation,Rochester,New York F.P.Tisch,VoiShan Manufacturing Company,Culver City,California ASSOCIATION OF AMERICAN RAILROADS J.G.Britton,Association of American Rail
