1、Designation:F95915Standard Specification forCompressible-Washer-Type Direct Tension Indicators forUse with Structural Fasteners1This standard is issued under the fixed designation F959;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,
2、the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 Thisspecificationcoverstherequirementsforcompressible-washer-type direct tension indicators,(DTIs)capable of ind
3、icating the achievement of a specified minimumbolt tension in a structural bolt.1.2 Eight types of DTIs in nominal diameter sizes12through 112in.as well as M16 through M36 are covered:1.2.1 Type 325-1DTIs for use with Specification A325Type 1 bolts or F or F1852 assemblies.1.2.2 Type 3253DTIs for us
4、e with Specification A325Type 3 bolts or F1852 Type 3 assemblies.1.2.3 Type 4901DTIs for use with Specification A490Type 1 bolts or F2280 assemblies.1.2.4 Type 4903DTIs for use with Specification A490Type 3 F2280 Type 3 assemblies.1.2.5 Type 8.8-1DTIs for use with Specification A325MType 1 bolts.1.2
5、.6 Type 8.8-3DTIs for use with Specification A325MType 3 bolts.1.2.7 Type 10.9-1DTIs for use with Specification A490MType 1 bolts.1.2.8 Type 10.9-3DTIs for use with Specification A490MType 3 bolts.1.3 DTIs are intended for installation under either a bolthead or a hardened washer.(See Research Counc
6、il on Struc-tural Connections:Specification for Structural Joints UsingHighStrength Bolts.)1.4 This specification provides for furnishing Type 3 DTIsto a Chemical Composition Requirement or a CorrosionResistance Index(CRI)at the manufacturers discretion.1.5 Terms used in this specification are defin
7、ed in Termi-nology F1789 unless otherwise specified.1.6 The following precautionary statement pertains only tothe test method portions,Section 10 and Appendix X1 of thisspecification:This standard does not purport to address all ofthe safety concerns,if any,associated with its use.It is theresponsib
8、ility 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 Documents2.1 ASTM Standards:2A325 Specification for Structural Bolts,Steel,Heat Treated,120/105 ksi Minimum Tensile StrengthA3
9、25M Specification for Structural Bolts,Steel,HeatTreated 830 MPa Minimum Tensile Strength(Metric)A490 Specification for Structural Bolts,Alloy Steel,HeatTreated,150 ksi Minimum Tensile StrengthA490M Specification for High-Strength Steel Bolts,Classes10.9 and 10.9.3,for Structural Steel Joints(Metric
10、)B695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelF436 Specification for Hardened Steel WashersF436M Specification for Hardened Steel Washers(Metric)F606/F606M Test Methods for Determining the MechanicalPropertiesofExternallyandInternally ThreadedFasteners,Washers,Dir
11、ect Tension Indicators,and RivetsF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1789 Terminology for F16 Mechanical FastenersF1852 Specification for“Twist Off”Type Tension ControlStructural Bolt/Nut/Washer Assemblies,Steel,HeatTreated,120/105 ksi
12、 Minimum Tensile StrengthF2280 Specification for“Twist Off”Type Tension ControlStructural Bolt/Nut/Washer Assemblies,Steel,HeatTreated,150 ksi Minimum Tensile StrengthG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels2.2 Research Council on Structural Connections:3Sp
13、ecification for Structural Joints Using HighStrengthBolts1This 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 May 1,2015.Published October 2015.Originall
14、yapproved in 1985.Last previous edition approved in 2013 as F959 13.DOI:10.1520/F0959-15.2For 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 p
15、age onthe ASTM website.3Available from Research Council on Structural Connections at www.boltcoun-cil.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 2.3 ASME Standard:4
16、ASME B18.2.6 Fasteners for Use in Structural ApplicationsASME B18.2.6M Fasteners for Use in Structural Applica-tions3.Ordering Information3.1 Orders for DTIs under this specification shall includethe following:3.1.1 Quantity(number of pieces);3.1.2 Name of product(DTI);3.1.3 Size,that is,nominal diameter;3.1.4 ASTM designation and year of issue(if not specified,current issue shall be used);3.1.5 Type required,325-1,325-3,490-1,490-3,8.8-1,8.8-3,10.9-1,10.9-3(see 1.2);3.1.6 Coating type,if requir
