1、ASME B18.29.2M-2005Helical CoilScrew ThreadInserts:FreeRunning andScrew Locking(Metric Series)AN AMERICAN NATIONAL STANDARDThe American Society ofMechanical EngineersThree Park Avenue.New York,NY 10016Date of Issuance:February 6,2006This Standard will be revised when the Society approves the issuanc
2、e of a new edition.There willbe no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME website under the Committee Pages athttp:/www.asme.org/codes/as they are issued.ASME is
3、 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 NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcomp
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9、AN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSFOreword.ivCommittee Roster,Correspondence With the B18 Committee1 General12Comparison With ISo Standards.13 References14 Terminology15 Dimensions16 Description17 Class of Fit28 Types of Inserts.29STI-Tapped Hole210 Helica
10、l Coil Insert511 Inspection and Quality Assurance.5Figures1Tapping Depths22Insert Configuration.63Torque Test Spacer13Tables1STI-Threaded Hole Data.3Chemical Composition.53Insert Length Data.74Insert Dimensions95Self-Locking Torque.126Torque Test Spacer Dimensions.13Nonmandatory AppendicesAInsert Le
11、ngth Selection15BScrew Thread Insert Taps1CInstallation17进FOREWORDThe helical coil screw thread insert was invented in the 1930s and found acceptance in aircraftmanufactured and serviced by the Allied air forces during World War II.Since that time,applica-tions for helical coil inserts have come int
12、o broad usage in aerospace,automotive,and industrialoriginal equipment design,production salvage(repair),and in service repair.Although this usagedid include metric spark plug sizes,the regular metric series was delineated in Europe in the1950s and came into production in the Customary units-using c
13、ountries in the 1960s.Subcommittee 29,Threaded Inserts,met initially in May 1989 after authorization by the ASMEB18 Committee to proceed with the development of standards covering screw thread inserts.This ASME Standard for the metric series of helical coil screw thread inserts follows ASMEB18.29.1-1993,Helical Coil Screw Thread Inserts-Free Running and Screw Locking(Inch Series).ASME B18.29.2M-2005 was approved as an American National Standard on May 26,2005.iv