1、Designation: F3111 16Standard 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 adopt
2、ion 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 heat treated, alloy steel, heavyhex structural
3、bolt/nut/washer 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 th
4、e rotation of the opposite side of theassembly.NOTE 1The 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.
5、to 114 in.inclusive.1.4 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 conta
6、ct type fireproof-ing.1.4.2 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 en
7、vironments, with orwithout protection 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 so
8、lids, contact thefasteners or their 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
9、.1.5.5 Cathodically protected environments, 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
10、 following precautionary statement pertains only tothe test method portions, Section 13, Section 14 and Annex A2of 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 establi
11、shappropriate safety and health practices and 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/E1444M Practi
12、ce for Magnetic Particle TestingF606/F606M Test Methods for Determining the MechanicalProperties of Externally and Internally ThreadedFasteners, Washers, Direct Tension Indicators, and Rivets1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibil
13、ity of Subcommittee F16.02 on Steel Bolts,Nuts, Rivets and Washers.Current edition approved April 1, 2016. Published May 2016. originallyapproved in 2014. last previous edition approved in 2014 as F311114. DOI:10.1520/F3111-16.2The “Heavy-Hex Structural Bolt/Nut/Washer Assemblies, Alloy Steel, HeatT
14、reated, 200 ksi Minimum Tensile Strength“ of 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 ca
15、reful consideration at ameeting of the responsible 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 determinatio
16、n of the validity of any such patentrights, and the 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,
17、 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 States1F788 Specification for Surface Discontinuities of Bolts,Screws, and Studs, Inch and Metric SeriesF812 Specification for S
18、urface Discontinuities of Nuts, Inchand 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
19、SteelBolts, Screws, Studs, and Nuts2.2 ASME Standards:4B1.3 Screw Thread Gaging Systems for Acceptability: Inchand Metric Screw Threads (UN, UNR, UNJ, M, and MJ)B1.15 Unified Inch Screw Threads (UNJ Thread Form)B18.2.6 Fasteners for Use in Structural Applications3. Terminology3.1 Definitions of Term
20、s 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 lot, ncomponent lot, for the purpose ofassigning an identification number and from which testsamples shall be selected, shall
21、 consist of all bolts, all nuts orall washers processed essentially together through all opera-tions to the shipping container, of which each component hasthe following common characteristics: heat number (mill heat);nominal dimensions (size), grade, and heat treatment lot.3.1.3 manufacturer, nentit
22、y that assembles, lubricates,tests, and certifies compliance with this specification.4. Ordering Information4.1 Orders for assemblies shall include the items of infor-mation below. Optional items not on the purchase order shallbe considered as not being required (see Note 2):4.1.1 Quantity of assemb
23、lies,4.1.2 Size, including nominal bolt diameter, bolt length, andthread pitch,4.1.3 Grade, that is, Grade 1 or Grade 2,4.1.4 Name of product, that is, heavy hex structural bolt/nut/washer assemblies,4.1.5 ASTM designation and year of publication, and4.1.6 Special requirements, if required.NOTE 2A t
24、ypical order description follows: 1000 assemblies, 114diameter by 4 in. long with 7 threads per inch, Grade 2, Heavy HexStructural Bolt/Nut/Washer Assemblies, ASTM F3111-14.5. Materials and Manufacture5.1 Heavy Hex Structural Bolt/Nut/Washer Assemblies:5.1.1 The bolts shall be heavy hex structural b
25、olts.5.1.2 The assemblies shall consist of one heavy hex struc-tural bolt, with one nut and two washers assembled on the boltand the nut threaded on the bolt a minimum of one turn.5.1.3 All nuts shall be heavy hex structural.5.1.4 All washers used in the assembly shall be circular andthrough hardene
26、d.5.1.5 Protective CoatingsThe bolts, nuts and washersshall not be coated by hot dip zinc coating, mechanicaldeposition, electroplating, dip-spin, dip-drain, or spray meth-ods with zinc or other metallic coatings.NOTE 3Protective coatings may be shop-applied or field-applied toinstalled assemblies.5
27、.1.6 Lubrication:5.1.6.1 The assemblies shall be lubricated by the manufac-turer to meet the Assembly Lot Tension Test requirements inSection 8.5.1.6.2 Lubrication in addition to that applied by the manu-facturer is permitted, provided the Assembly Lot Tension Testrequirements in Section 8 are met.5
28、.1.7 Secondary ProcessingSecondary processing shallnot be permitted to an assembly lot, except that lubrication maybe added as provided in 5.1.6.2.5.2 Heavy Hex Structural Bolts:5.2.1 Heat Treatment:5.2.1.1 If phosphate coating has been applied to the rawmaterial, the residual phosphate shall be rem
29、oved prior to heattreatment, and a record of the application of this processingstep shall be maintained by the processor.5.2.1.2 Heavy hex structural bolts shall be heat treated byquenching in oil from the austenitizing temperature and thentempering by reheating to a temperature not less than 1000F.
30、5.2.2 ThreadThe threads of heavy hex structural boltsshall be rolled.5.3 Nuts:5.3.1 Nuts shall be made by hot forming.5.3.2 Nuts shall be heat treated by quenching in a liquidmedium from a temperature above the transformation tempera-ture and tempering at a temperature of at least 850F.5.3.3 Threads
31、 shall be formed by tapping.5.4 Washers:5.4.1 Washers shall be through hardened.6. Chemical Composition6.1 Heavy Hex Structural Bolts:6.1.1 Steel for bolts shall be made by the basic oxygenprocess.6.1.2 Bolts shall be alloy steel conforming to the chemicalcomposition in Table 1.6.1.3 Product analysi
32、s may be made by the purchaser onfinished bolts representing each lot. The chemical compositionshall conform to the requirements in Table 1, ProductAnalysis.6.1.4 Heats of steel to which bismuth, selenium, tellurium,lead or boron has been intentionally added shall not bepermitted.6.1.5 Compliance wi
33、th 6.1.4 shall be based on certificationthat heats of steel having any of the listed elements intention-ally added were not used to produce the bolts.6.1.6 Chemical analysis shall be performed in accordancewith Test Methods, Practices, and Terminology A751.6.2 Nuts:4Available from American Society o
34、f Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.F31111626.2.1 Steel for nuts shall be made by the basic oxygen orelectric-furnace process.6.2.2 Nuts shall conform to the chemical composition inTable 2.6.2.3 Product analysis ma
35、y be made by the purchaser onfinished nuts representing each lot. The chemical compositionshall conform to the requirements in Table 2, ProductAnalysis.6.2.4 Chemical analysis shall be performed in accordancewith Test Methods, Practices, and Terminology A751.6.3 Washers:6.3.1 Steel used in the manuf
36、acture of washers shall beproduced by the basic-oxygen or electric-furnace process.6.3.2 Washers shall conform to the chemical compositionspecified in Table 3.6.3.3 Product analysis may be made by the purchaser onfinished washers representing each lot. The chemical compo-sition shall conform to the
37、requirements in Table 3, ProductAnalysis.6.3.4 Chemical analysis shall be performed in accordancewith Test Methods, Practices, and Terminology A751.7. Mechanical Property Requirements for Heavy HexBolts, Nuts and Washers7.1 Heavy Hex Bolts:7.1.1 HardnessBolts shall conform to the hardness speci-fied
38、 in Table 4.7.1.2 Tensile Properties:7.1.2.1 Bolts shall be wedge tested full size and shallconform to the minimum and maximum wedge tensile load,and proof load or alternative proof load specified in Table 5.The load achieved during proof load testing shall be equal to orgreater than the specified p
39、roof load.7.1.2.2 When the length of the bolt makes full size testingimpractical, machined specimens shall be tested and shallconform to the requirements specified in Table 6. When boltsare tested by both full size and machined specimen methods,the full size test shall take precedence.7.1.2.3 For bo
40、lts on which both hardness and tension testsare performed, acceptance based on tensile requirements shalltake precedence in the event of low hardness readings.7.1.2.4 Sample bolts shall be used to verify that the alloysteel material and heat treatment provides resistance to Envi-ronmental Hydrogen E
41、mbrittlement (EHE), in accordance withthe requirements of Annex A2.7.2 Nuts:7.2.1 Nuts shall conform to the surface hardness specified inTable 7.7.2.2 Nuts shall withstand the proof load stress specified inTable 8.7.3 Washers:7.3.1 Washers shall conform to the core hardness specifiedin Table 9.8. As
42、sembly Lot Tension Test8.1 PurposeThe assembly lot test hall be performed onfastener assemblies to determine the ability of the assembly toprovide the required initial tension range when the initialtorque is applied, and to provide the minimum requiredpretension when the final rotation is applied.8.
43、2 RequirementFull size completed assemblies shall betested in accordance with 14.4. When the specified torque inTable 10 Column 1 is applied, an initial bolt tension shallconforming to the requirements of Table 10 Columns 2 and 3.When the Final Rotation specified in Table 10 Column 4 issubsequently
44、applied, the minimum bolt tension shall conformto the requirements of Table 10 Column 5.9. Carburization/Decarburization of Heavy HexStructural Bolts9.1 This test is intended to evaluate the presence or absenceof carburization and decarburization as determined by thedifference in microhardness near
45、the surface and core.9.2 Requirements:TABLE 1 Chemical Requirements for BoltsNOTE 1Aluminum, cobalt, niobium/columbium, nickel, titanium,tungsten, zirconium, or any other alloying elements may be added toobtain the desired alloying effect.ElementComposition, %Heat Analysis, % Product Analysis, %min
46、max min maxCarbon 0.38 0.42 0.36 0.44Manganese 0.40 0.60 0.37 0.63Phosphorus . . . 0.01 . . . 0.015Sulfur . . . 0.01 . . . 0.015Silicon . . . 0.10 . . . 0.12Chromium 1.20 1.40 1.15 1.45Molybdenum 0.60 0.80 0.57 0.83Vanadium 0.30 0.40 0.27 0.43TABLE 2 Chemical Requirements for NutsElementComposition,
47、 %Heat Analysis, % Product Analysis, %min max min maxCarbon 0.30 0.48 0.28 0.50Manganese 0.60 0.90 0.57 0.93Silicon 0.15 0.35 0.13 0.37Phosphorus . . . 0.050 . . . 0.055Sulfur . . . 0.050 . . . 0.055TABLE 3 Chemical Requirements for WashersElementComposition, %Heat Analysis, % Product Analysis, %min
48、 max min maxCarbon 0.42 0.48 0.40 0.50Manganese 0.60 0.90 0.57 0.93Silicon 0.15 0.35 0.13 0.37Phosphorus . . . 0.030 . . . 0.035Sulfur . . . 0.030 . . . 0.035TABLE 4 Hardness Requirements for BoltsBolt Size, in. Bolt Length, in.Rockwell CMin Max1to114, incl all 38 45F31111639.2.1 CarburizationThe as
49、semblies shall show no evi-dence of a carburized surface when evaluated in accordancewith 14.1.4.9.2.2 DecarburizationHardness value differences shallnot exceed the requirements set forth for decarburization inTest Method F2328 for class 3/4 H materials when evaluated inaccordance with 14.1.4.10. Dimensions of Heavy Hex Structural Bolts, Nuts, andWashers10.1 Heavy Hex Bolts:10.1.1 Bolts shall be furnished with heavy hex structuralheads.10.1.2 The head and body dimensions shall conform to thedimensional requirements in Table 11, and ASME B18.2.6section 2.1.1 for t
