1、Designation:F228014Standard Specification for“Twist Off”Type Tension Control Structural Bolt/Nut/WasherAssemblies,Steel,Heat Treated,150 ksi Minimum TensileStrength1This standard is issued under the fixed designation F2280;the number immediately following the designation indicates the year oforigina
2、l 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.Scope*1.1This specification covers two types of heat treated,steel,tension control
3、 bolt-nut-washer assemblies,also referredto as“sets,”having a tensile strength of 150 to 173 ksi.Theseassemblies are capable of developing a minimum predeter-mined tension when installed by applying torque to the nut,while at the same time applying a counter torque to separate thespline end from the
4、 body of the bolt using an appropriate splinedrive installation tool.1.2 An assembly consists of a tension control bolt withspline end(covered by this specification)and a suitable nut andwasher covered by reference to applicable ASTM specifica-tions.1.3 The fastener assemblies are intended for use i
5、n struc-tural connections.These connections,installation procedures,and the use of alternate design structural bolts are coveredunder the requirements of the“Specification for StructuralJoints UsingASTM or A490 Bolts”,approved by the ResearchCouncil on Structural Connections.1.4 The assemblies are a
6、vailable with either round(buttonor dome)heads,heavy hex structural heads,or alternate designheads described in Section 11,in sizes12to 118in.inclusive,in two types specified in Section 4.1.5 Tension control bolts manufactured and marked inaccordance with the requirements of Specification A490,andco
7、nforming to the dimensional and other requirements of thisspecification,will be considered an acceptable alternate underthis specification for two years following initial publication.1.6 The following precautionary statement pertains only tothe test method portions,Sections 15 and 16,of this Specifi
8、-cation:This standard does not purport to address 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.2.Referenced D
9、ocuments2.1 ASTM Standards:2A490 Specification for Structural Bolts,Alloy Steel,HeatTreated,150 ksi Minimum Tensile StrengthA563 Specification for Carbon and Alloy Steel NutsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsE709 Guide for Magnetic Particle TestingE1
10、444 Practice for Magnetic Particle TestingF436 Specification 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
11、,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1789 Terminology for F16 Mechanical FastenersF2328 Test Method for Determining Decarburization andCarburization in Hardened and Tempered Threaded SteelBolts,Sc
12、rews,Studs,and NutsG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels2.2 ASME Standards:3B1.1 Unified Inch Screw ThreadsB1.3M Screw Threads Gaging Systems for DimensionalAcceptabilityInch and Metric Screw Threads1This specification is under the jurisdiction of ASTM C
13、ommittee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts,Rivets and Washers.Current edition approved Sept.1,2014.Published September 2014.Originallyapproved in 2006.Last previous edition approved in 2012 as F228012.DOI:10.1520/F2280-14.2For referenced ASTM
14、 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.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headq
15、uarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 B18.2.6 Fasteners for Use in Structural Applications2.3 Res
16、earch Council on Structural Connections:4Specification for Structural Joints Using ASTM A325 orA490 Bolts3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 The definition of terms used in this specification shallbe as specified in Terminology F1789,unless otherwise definedherein.3.1.2 component lotcomponent lot,for the purpose ofassigning an identification number and from which testsamples shall be selected,shall consist of all tension controlbolts,all nuts or all washers proc
