1、Designation:A32514American AssociationState Highway andTransportation OfficialsStandard AASHTO No.:M 164Standard Specification forStructural Bolts,Steel,Heat Treated,120/105 ksi MinimumTensile Strength1This standard is issued under the fixed designation A325;the number immediately following the desi
2、gnation indicates the year oforiginal adoption or,in the case of revision,the year of last 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 agenc
3、ies of the U.S.Department of Defense.1.Scope*1.1 This specification2covers two types of quenched andtempered steel heavy hex structural bolts having a minimumtensile strength of 120 ksi for sizes 1.0 in.and less and 105 ksifor sizes over 1.0 to 112in.,inclusive.1.2 The bolts are intended for use in
4、structural connections.These connections are comparable to those covered under therequirements of the Specification for Structural Joints UsingHigh-Strength Bolts,approved by the Research Council onStructural Connections;endorsed by the American Institute ofSteel Construction and by the Industrial F
5、astener Institute.1.3 The bolts are furnished in sizes12to 112in.,inclusive.They are designated by type,denoting chemical composition asfollows:TypeDescriptionType 1Medium carbon,carbon boron,or medium carbon alloy steel.Type 2Withdrawn in November 1991.Type 3Weathering steel.NOTE1Bolts for general
6、applications,including anchor bolts,arecovered by Specification A449.Also refer to Specification A449 forquenched and tempered steel bolts and studs with diameters greater than112in.but with similar mechanical properties.1.4 The values stated in inch-pound units are to be regardedas standard.No othe
7、r units of measurement are included in thisstandard.NOTE2Acomplete metric companion to Specification A325 has beendeveloped,Specification A325M;therefore,no metric equivalents arepresented in this specification.1.5 This specification is applicable to heavy hex structuralbolts only.For bolts of other
8、 configurations and thread lengthswith similar mechanical properties,see Specification A449.1.6 Terms used in this specification are defined in Termi-nology F1789.1.7The following safety hazard caveat pertains only to thetest methods portion,Section 10,of this specification:Thisstandard does not pur
9、port to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:3A194/A1
10、94M Specification for Carbon andAlloy Steel Nutsfor Bolts for High Pressure or High Temperature Service,or BothA325M Specification for Structural Bolts,Steel,HeatTreated 830 MPa Minimum Tensile Strength(Metric)A449 Specification for Hex Cap Screws,Bolts and Studs,Steel,Heat Treated,120/105/90 ksi Mi
11、nimum TensileStrength,General UseA563 Specification for Carbon and Alloy Steel NutsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelD3951 Practice for Commercial PackagingF436 Specific
12、ation for Hardened Steel WashersF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,Direct Tension Indicators,and RivetsF788/F788M Specification for Surface Discontinuities ofBolts,Screws,and Studs,Inch and Metric SeriesF959 Specificat
13、ion for Compressible-Washer-Type DirectTension Indicators for Use with Structural Fasteners1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts,Rivets and Washers.Current edition approved Sept.1,20
14、14.Published September 2014.Originallyapproved in 1964.Last previous edition approved in 2010 as A325 101.DOI:10.1520/A0325-14.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-325 in Section II of that Code.3For referenced ASTM standards,visit the ASTM website,www
15、.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 standardCopyright ASTM International,100 Barr Harbor Drive,PO Box
16、C700,West Conshohocken,PA 19428-2959.United States1 F1136 Specification for Zinc/Aluminum Corrosion Protec-tive Coatings for FastenersF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1789 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 FastenersG101 Guide for Estimating the Atmospheric Corrosion Re-sistance
