1、Designation:F314815Standard Specification forHigh Strength Structural Bolt Assemblies,Steel and AlloySteel,Heat Treated,144ksi Minimum Tensile Strength,InchDimensions1This standard is issued under the fixed designation F3148;the number immediately following the designation indicates the year oforigi
2、nal 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.1.Scope1.1 This specification covers chemical,dimensional,physi-cal and mechanical
3、 requirements for quenched and temperedbolts manufactured from steel and alloy steel,in inch dimen-sions.The bolts are available as structural bolting assemblieswhich include a fixed spline bolt,a suitable nut and at least onewasher covered by reference herein.1.2 Intended Use:1.2.1 Bolts manufactur
4、ed under this specification,and struc-tural bolting assemblies supplied under this specification,areintended for use in structural connections covered in theSpecification for Structural Joints Using High-Strength Boltsand installed using the torque-and-angle or part turn/combinedinstallation method.
5、1.2.2 Structural bolting assemblies in this specification arefurnished in nominal diameters from12to 1-14in.inclusive.1.3 Classification:1.3.1 Structural bolting assemblies are designated as Grade144.1.3.2 Bolts are designated by type denoting raw materialchemical composition.Type 1-144ksi-carbon st
6、eel,carbon boron steel,alloy steel or alloy steelwith boron additionType 3-144ksi-weathering steel1.4 Terms used in the specification are defined in Terminol-ogy F1789.1.4.1 Torque-and-Angle Fixed-Spline Structural Boltboltthat includes an integral fixed-spline end which extends beyondthe threaded p
7、ortion of the bolt and is used as a component ofa torque-and-angle fixed-spline structural bolting assembly.1.4.2 Torque-and-Angle Fixed-Spline Structural BoltingAssembly2 a fastener assembly comprised of a torque-and-angle fixed-spline bolt with a suitable nut and at least onewasher,installed and t
8、ightened using a special electric wrenchand socket system which has an inner socket that engages thefixed-spline end of the bolt and with an outer socket thatengages and turns the nut,in two separate and distinctoperations,the first is a controlled torque application and thesecond is a specified ang
9、le.1.4.3 Combined MethodA tightening method comprisedof two steps,the first tightening step using a torque regulatingtool and the second tightening step in which a specified turn isapplied to the turned part of the assembly.Also known as thepart turn method.1.5 This standard does not purport to addr
10、ess all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.6 ASTM International takes no position respecting thevalid
11、ity of any patent rights asserted in connection with anyitem mentioned in this standard.Users of this standard areexpressly advised that determination of the validity of any suchpatent rights,and the risk of infringement of such rights,areentirely their own responsibility.2.Referenced Documents2.1 A
12、STM Standards:3A563 Specification for Carbon and Alloy Steel Nuts1This 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 Aug.1,2015.Published September 2015
13、.DOI:10.1520/F3148-152The torque-and-angle fixed-spline structural bolting system has a patentapplication pending.Interested parties are invited to submit information regardingthe identification of an alternative(s)to this patent-pending item to the ASTMInternational Headquarters.Your comments will
14、receive careful consideration at ameeting of the responsible technical committee,which you may attend.3For 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 Docum
15、ent Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iro
16、n and SteelE709 Guide for Magnetic Particle TestingE1444/E1444M Practice for Magnetic Particle TestingF436 Specification for Hardened Steel WashersF606/F606M Test Methods for Determining the MechanicalPropertiesofExternallyandInternally ThreadedFasteners,Washers,Direct Tension Indicators,and RivetsF788 Specification for Surface Discontinuities of Bolts,Screws,and Studs,Inch and Metric SeriesF1136/F1136M Specification for Zinc/Aluminum CorrosionProtective Coatings for FastenersF1470 Practice for
