1、Designation:A307141Standard Specification forCarbon Steel Bolts,Studs,and Threaded Rod 60 000 PSITensile Strength1This standard is issued under the fixed designation A307;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of la
2、st revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1NOTESection 7.3 was editorially corrected in May 2
3、017.1.Scope*1.1 This specification2covers the chemical and mechanicalrequirements of two grades of carbon steel bolts and studs insizes14in.through 4 in.The fasteners are designated by“Grade”denoting tensile strength and intended use,as follows:GradeDescriptionGrade ABolts,studs,and threadedrod havi
4、ng a minimumtensile strength of 60 ksiand intended for generalapplications,Grade BBolts,studs,and threadedrodAhaving a tensilestrength of 60 to 100 ksi andintended for flanged joints inpiping systems with cast ironflanges,andGrade CReplaced by SpecificationF1554 Gr.36AThreaded rod is not usually pro
5、duced to Grade B,but can be when specified bythe purchaser.1.2 This specification does not cover requirements formachine screws,thread cutting/forming screws,mechanicalexpansion anchors or similar externally threaded fasteners.1.3 Suitable nuts are covered in Specification A563.Unlessotherwise speci
6、fied,the grade and style of nut for each grade offastener,of all surface finishes,shall be as follows:Fastener Grade and SizeNut Grade and StyleAA14to 112in.A,hexA over 112to 4 in.A,heavy hexB,14to 4 in.A,heavy hexANuts of other grades and styles having specified proof load stresses(Specifica-tion A
7、563,Table 3)greater than the specified grade and style of nut are alsosuitable.1.4 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.5 Supplementary Requirement S1 of an optional nature isprovided,which describes addition
8、al restrictions to be appliedwhen bolts are to be welded.It shall apply only when specifiedin the inquiry,order,and contract.1.6 Terms used in this specification are defined in Termi-nology F1789 unless otherwise defined herein.1.7 This international standard was developed in accor-dance with intern
9、ationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3A563 Speci
10、fication for Carbon and Alloy Steel NutsA706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete ReinforcementA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and Steel
11、F606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,and Rivets(Metric)F0606_F0606M1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nu
12、ts,Rivets and Washers.Current edition approved Oct.1,2014.Published October 2014.Originallyapproved in 1947.Last previous edition approved in 2012 as A307 12.DOI:10.1520/A0307-14E01.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-307 in Section II of that Code.3F
13、or referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCop
14、yright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International
15、 Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 F788/F788M Specification for Surface Discontinuities ofBolts,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and P
16、erformance InspectionF1554 Specification for Anchor Bolts,Steel,36,55,and105-ksi Yield StrengthF1789 Terminology for F16 Mechanical FastenersF2329 Specification for Zinc Coating,Hot-Dip,Require-ments for Application to Carbon and Alloy Steel Bolts,Screws,Washers,Nuts,and Special Threaded Fasteners2.2 ASME Standards:B 1.1 Unified Screw Threads4B 18.2.1 Square and Hex Bolts and Screws4B 18.24 Part Identifying Number(PIN)Code System5B18.31.3 Threaded Rods(Inch Series)43.Ordering Information3.1 Orde
