1、Designation:F311114Standard Specification forHeavy Hex Structural Bolt/Nut/Washer Assemblies,AlloySteel,Heat Treated,200 ksi Minimum Tensile Strength1,2This standard is issued under the fixed designation F3111;the number immediately following the designation indicates the year oforiginal adoption or
2、,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 heat treated,alloy steel,heavyhex structural bolt/nut/washer
3、 assemblies,also referred to as“sets,”having a tensile strength of 200 to 215 ksi.Theseassemblies are capable of developing a minimum predeter-mined tension when installed by applying an initial torquefollowed by rotation to the nut or bolt head,while at the sametime preventing the rotation of the o
4、pposite side of theassembly.NOTE1The installations in Appendix X1 are important to the properapplication of this product.1.2 An assembly consists of a heavy hex structural headbolt,nut and two washers covered by this specification.1.3 The assemblies are available in sizes 1 in.to 114in.inclusive.1.4
5、 The fastener assemblies are intended for use in struc-tural connections in the following environmental conditions:1.4.1 Interiors,normally dry,including interiors wherestructural steel is embedded in concrete,encased in masonry orprotected by membrane or noncorrosive contact type fireproof-ing.1.4.
6、2 Interiors and exteriors,normally dry,under roof,where the installed assemblies are soundly protected by ashop-applied or field-applied coating to the structural steelsystem.1.5 The fastener assemblies are not intended for use instructural connections in the following environments,with orwithout pr
7、otection by a shop-applied or field-applied coating tothe structural steel system:1.5.1 Exteriors not under roof.1.5.2 Chemical environments in which strong concentra-tions of highly corrosive gases,fumes,or chemicals,either insolution or as concentrated liquids or solids,contact thefasteners or the
8、ir protective coating.1.5.3 Heavy industrial environments severe enough to beclassified as a chemical environment as described in 1.5.2.1.5.4 Condensation and high humidity environments main-taining almost continuous condensation,including submergedin water and soil.1.5.5 Cathodically protected envi
9、ronments,in which currentis applied to the structural steel system by the sacrificial anodemethod or the DC power method.1.6 UnitsThe values stated in inch-pound units are to beregarded as standard.No other units of measurement areincluded in this standard.1.7 The following precautionary statement p
10、ertains only tothe test method portions,Section 13,Section 14 and AnnexA2of this Specification:This standard does not purport to addressall of the safety concerns,if any,associated with its use.It isthe responsibility of the user of this standard to establishappropriate safety and health practices a
11、nd determine theapplicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsE709 Guide for Magnetic Particle TestingE1444 Practice for Magnetic Particle TestingF606 Test Methods for
12、 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 Series1This specification is under the jurisdiction of ASTM Committee F16
13、onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts,Rivets and Washers.Current edition approved Nov.15,2014.Published February 2015.DOI:10.1520/F3111-14.2The Heavy-Hex Structural Bolt/Nut/Washer Assemblies,Alloy Steel,HeatTreated,200 ksi Minimum Tensile Strength o
14、f Grade 2 is covered by US patentnumber 7 070 664,July 4,2006.Interested parties are invited to submit informationregarding the identification of an alternative(s)to this patented item to the ASTMInternational Headquarters.Your comments will receive careful consideration at ameeting of the responsib
15、le technical committee,which you may attend.ASTM International takes no position respecting the validity of any patent rightsasserted in connection with any item mentioned in this standard.Users of thisstandard are expressly advised that determination of the validity of any such patentrights,and the
16、 risk of infringement of such rights,are entirely their ownresponsibility.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 Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 F812/F812M Specification for Surface Discontinuities ofNuts,Inch and Metric Series
