ACCEPTANCE NOTICE
andFederalAgenciesMetrichex olts shall conform to this document andAppendix II whichestablishes This non-Govemment document was adopted on 26April1979 and is approved foruse by the DoDstandard items for Govermment application. Appendix IIl Table 4 shall be used for item selection in accordance with the part numbering system and size information contained therein.The indicated industrygroup has furnished the clearances required by existing regulations. Copies of the document are stocked byactivities and Federal Agencies only. Contractors and industry groups must obtain copies directly from: DoD Single Stock Point Naval Publications and Forms Center Philadelphia PA 19120 for issue to DoD
The American Society of Mechanical EngineersUnited Engineering Center 345 E.47th StreetNew York NY 10017 orThe American National Standards Institute 1430 Broadway New York NY 10018Title of Document: Bolt Hex MetricANSI Document No.: ANSI B18.2.3.5M-1979Date of Specific Issue Adopted: 26 Aprll 1979Releasing Industry Group: The American Society of Mechanical EngineersCustodians: Military Coordinating ActivityArmy-AR Navy - AS Army -ARAir Force - 99 (090-9005 101d)Review Aetivities: User Activities:Amy-AV MI ER Navy-MC Army-ME AT Navy SHNSA NS DLA -ISCivil Agencies:GSA-FSS
NOTICE: When reaffirmation amendment revision or cancellation of this standard is initially proposed the industry group responsible for this standard shall infomm the Military Coordinating Activity of the proposed action and request their participation.FSC 5306
Page 3 Note 18 change B1.13 to read B1.13M
Page 5 in the standard shall be replaced with thesecond page of this errata
read: Page 10 MATERIAL AND FINISH CODE change to
A -Stcel w/Cadmium Plating per -P-416 Property Class 10.9. Type II Class 3 (5.1μm Plating. Thickness) BClass 3 (5.1μm Plating Thickness) PropertyClass 10.9.
MetricHexBolt
Govermment Key Words:Bolt Hex-Metric
ANSIB18.2.3.5M-1979
ACCEPTANCENOTICE
andFederalAgenciesMetric hex bolts shall conform to this document andAppendix II whichestablishes This non-Government document was adopted on 26 April 1979 and is approved for use by the DoDstandard items for Govemment application.Appendix IIl Table 4 shall be used for item selection Inaccordance with the parnumbering system and size information contained therein.The indicatedindustry group has fumished the clearances required by existing regulations.Copies ofthe document are stockedbyDoD Single Stock Point Naval Publications and Forms Center Philadelphia PA 19120 for issue to DoD activities and Federal Agencies only. Contractors and industry groups must obtain coples directly from:
United Engineering Center 345 E.47th Street The American Society of Mechanical EngineersNew York NY 10017orThe American National Standards Institute 1430 Broadway New York NY 10018Title of Document:Bolt Hex MetricANSI Document No.: ANSI B18.2.3.5M-1979Date of Specific Issue Adopted: 26 April 1979 Releasing Industry Group: The American Society of Mechanical EngineersCustodians: Military Coordinating AetivityNavy-AS Army-AR Army ARAir Force 99 (Project 5306-0620)Review Activities: User Activities:Army AV MI ER Navy-MC Navy -SH Army -ME ATDLA-IS NSA NSCivil Agencies:GSA-FSS
NOTICE: When reafimation mendment revision or cancellation of this standard is initially propoed the industry group responsible for this standard shall infom the Military Coordinating Activity of the proposed action and request their participation.FSC 5306
FOREWORD
American National Standards Committee B18for the standardization of bolts screws nuts rivets andsimilar fasteners was organized in March 1922 as Sectional Committee B18 under the aegis of the American Engineering Standards Committec (later the American Standards Association then the United States ofcontent of standards covering wrench head bolts and nuts.
At itsmeeting on December4 1974 Committee B18authorizedpreparation of a series of standardsfor metric fasteners. Submittee 2 was assigned responsibility for developing standards for metric hexbolts screws and nuts.
At a meeting on September 22 1976 Submittee 2 organized the contents of a standard coveringeight different hex head screw and bolt products.Actual drafting was postponed until ISO/TC2 could reachmeetings held in April 1977 final actions were taken. Committee B18 affirmed the TC2 decisions at ameeting on June 29 1977 and drafting of this standard was started.
InFebruary 1978 Committee B18establisheda cooperative program with the Department of Defenseto draft American National Standards for metric fasteners in such a way that they could be used directlyby the Government for procurement purposes.The Department of Defenserequested that each of the eight products be covered in separate standards and Submitte 2 accepted this approach at its meeting onJune 27 1978.
osquently approved by the secretariat and submitted to theAmericanNational StandardsInstitute fordesignation as an American National Standard. This was granted on April 26 1979.
