1、Designation: F3125 15Standard Specification forHigh Strength Structural Bolts, Steel and Alloy Steel, HeatTreated, 120 ksi (830 MPa) and 150 ksi (1040 MPa) MinimumTensile Strength, Inch and Metric Dimensions1This standard is issued under the fixed designation F3125; the number immediately following
2、the designation indicates the year oforiginal 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 cov
3、ers chemical, physical and me-chanical requirements for quenched and tempered bolts manu-factured from steel and alloy steel, in inch and metricdimensions, in two strength grades, two types and two styles.1.1.1 This specification is a consolidation and replacementof six ASTM standards, including; A3
4、25, A325M, A490,A490M, F1852 and F2280.1.1.2 This consolidated standard is to ensure alignmentbetween standards with the same intended end use and tosimplify the use and maintenance of structural bolt specifica-tions.1.2 Intended Use:1.2.1 Bolts manufactured under this specification are in-tended fo
5、r use in structural connections covered in the Speci-fication for Structural Joints Using High-Strength Bolts, asapproved by the Research Council on Structural Connections.1.2.2 Bolts in this specification are furnished in sizes from12 to 1-12 in. inclusive and from M12 to M36 inclusive.1.3 Classifi
6、cation:1.3.1 Bolts are designated by grade or property class, whichindicates inch or metric respectively.1.3.2 Bolts are designated by type denoting raw materialchemical composition.1.3.3 Bolts are designated by style denoting Heavy Hexbolts or “Twist-Off” Style assemblies.Grade Min. Strength Type S
7、tyleA325 120 ksi 1 3 Heavy Hex HeadA325M 830 MPa 1 3 Heavy Hex HeadF1852 120 ksi 1 3 Twist-OffA490 150 ksi 1 3 Heavy Hex HeadA490M 1040 MPa 1 3 Heavy Hex HeadF2280 150 ksi 1 3 Twist-OffType 1 - 120 ksi (830 MPa) - carbon steel, carbon boron steel, alloy steel oralloy steel with boron additionType 3
8、- 120 ksi (830 MPa) or 150 ksi (1040 MPa) - weathering steelType 1 - 150 ksi (1040 MPa) - alloy steel or alloy steel with boron addition1.4 Terms used in this specification are defined in F1789.1.5 UnitsThe values stated in either SI units or inch poundunits are to be regarded separately as standard
9、. The valuesstated in each system may not be exact equivalents; therefore,each system shall be used independently of the other. Combin-ing values from the two systems may result in non-conformance with the standard.1.6 Table footnotes are requirements. Notes are advisory.1.7 The following safety haz
10、ard caveat pertains to the testmethods portion of this specification: This standard does notpurport to address all of the safety concerns, if any, associatedwith its use. It is the responsibility of the user of this standardto establish appropriate safety and health practices anddetermine the applic
11、ability of regulatory limitations prior touse.2. Referenced Documents2.1 ASTM Standards:2A194/A194M Specification for Carbon andAlloy Steel Nutsfor Bolts for High Pressure or High Temperature Service,or BothA354 Specification for Quenched and Tempered Alloy SteelBolts, Studs, and Other Externally Th
12、readed FastenersA449 Specification for Hex Cap Screws, Bolts and Studs,Steel, Heat Treated, 120/105/90 ksi Minimum TensileStrength, General UseA563 Specification for Carbon and Alloy Steel NutsA563M Specification for Carbon andAlloy Steel Nuts (Met-ric)A751 Test Methods, Practices, and Terminology f
13、or Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelE709 Guide for Magnetic Particle Testing1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on S
14、teel Bolts,Nuts, Rivets and Washers.Current edition approved Jan. 1, 2015. Published January 2015. DOI: 10.1520/F312515.2For 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
15、 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 States1F1136/F1136M Specification for Zinc/Aluminum CorrosionProtective Coatings for FastenersE1444/E1444M Practice for Magnetic Parti
16、cle TestingF436 Specification for Hardened Steel WashersF436M Specification for Hardened Steel Washers (Metric)F606/F606M Test Methods for Determining the MechanicalProperties of Externally and Internally ThreadedFasteners, Washers, Direct Tension Indicators, and RivetsF788 Specification for Surface
17、 Discontinuities of Bolts,Screws, and Studs, Inch and Metric SeriesF1136/F1136M Specification for Zinc/Aluminum CorrosionProtective Coatings for FastenersF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1789 Terminology for F16 Mechanical Fasteners
18、F2328 Test Method for Determining Decarburization andCarburization in Hardened and Tempered Threaded SteelBolts, Screws, Studs, and NutsF2328M Test Method for Determining Decarburization andCarburization in Hardened and Tempered Threaded SteelBolts, Screws, Studs, and Nuts (Metric)F2329 Specificatio
19、n for Zinc Coating, Hot-Dip, Require-ments for Application to Carbon and Alloy Steel Bolts,Screws, Washers, Nuts, and Special Threaded FastenersF2833 Specification for Corrosion Protective Fastener Coat-ings with Zinc Rich Base Coat and Aluminum Organic/Inorganic TypeG101 Guide for Estimating the At
20、mospheric Corrosion Re-sistance of Low-Alloy Steels2.2 ASME Standards:3B1.1 Unified Screw ThreadsB1.13M Metric Screw ThreadsB18.18 Quality Assurance for FastenersB18.2.6 Fasteners for Use in Structural ApplicationsB18.2.6M Metric Fasteners for Use in Structural Applica-tions2.3 IFI Standard:4IFI 144
21、 Test Evaluation Procedures for Coating Qualifica-tion2.4 RCSC Standard:5Specification for Structural Joints Using High-Strength Bolts3. Ordering Information3.1 Orders for bolts under this specification shall include:3.1.1 ASTM designation.3.1.2 Quantity: : Number of bolts or assemblies, includingwa
22、shers, if required.3.1.3 Size: Including nominal bolt diameter and bolt length,and thread pitch if other than standard.3.1.4 Grade: A325, A325M, A490, A490M, F1852 orF2280.3.1.5 Type: Type 1 or Type 3. When Type is not specifiedeither Type 1 or Type 3 may be furnished at the suppliersoption.3.1.6 St
23、yle: Heavy Hex or Twist-Off Style.3.1.7 Coatings or finishes: If other than plain finish, specifythe coating process or finish required, see Annex A1.3.2 Test reports, see Section 14.3.3 Additional details of other assembly components suchas nuts and washers, if required.3.4 Rotational capacity test
24、ing of matched sets or assem-blies in accordance with Annex A2 if required by the pur-chaser.3.5 Heavy Hex bolts may be ordered individually, packagedwith nuts, packaged with nuts and washers, or as assemblies.3.6 Any special observation or inspection requirementsshall be specified at the time of in
25、quiry and at the time of order.See Section 13.2.3.7 Any supplementary requirements.3.8 Country of origin requirements, if any.NOTE 1A typical description follows: 1000 pieces34 ” 3” ASTMF312515, Grade A325 heavy hex bolt, Type 1, each with one hardenedASTM F436 Type 1 washer, and one A563 Grade DH h
26、eavy hex nut.NOTE 2Bolts are sometimes detailed with names such as A325 HS,A325 SC, A325 X or A490 N. These names relate to connection designand bolt installion, but do not change the manufacturing requirements andare preferably not shown on bolt orders.4. Dimensions4.1 Head and Body:4.1.1 Bolts sha
27、ll conform to the dimensions specified inTable 1 for Heavy Hex or Twist-Off bolts.4.1.2 The thread length shall not be changed except asprovided in Supplementary Requirement S1 or S2. Otherdimensions shall not be changed except in accordance withSupplementary Requirement S2.4.1.3 Bolts with thread l
28、engths or dimensional requirementswhich differ from this specification may also be ordered underSpecification A449 or A354. Users should note that A449 andA354 are not exact equivalents to the structural grades in thisspecification.4.2 Threads:4.2.1 Uncoated bolt threads shall be as specified in Tab
29、le 1.4.2.2 Coated bolts shall have threads meeting Table 1requirements before coating.4.3 The gauging limit for coated bolts shall be verifiedduring manufacture. In case of dispute, a calibrated thread ringgauge of the same size as the oversize limit in AnnexA1 (ClassX tolerance, gauge tolerance plu
30、s) shall be used to verifycompliance. The gauge shall assemble with hand effort follow-ing application of light machine oil to prevent galling anddamage to the gauge. These inspections, when performed toresolve controversy, shall be conducted at the frequencyspecified in the quality provisions of AS
31、ME B18.18.NOTE 3It is the intent of this specification that coated nuts and boltsassemble freely when ordered together. It is recognized that the batchnature of coating process and the cumulative effect of coating thicknessmay create intermittent assembly problems. Staying within the material3Availa
32、ble from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Industrial Fasteners Institute (IFI), 6363 Oak Tree Blvd. Independence, OH44131. http:/www.indfast.org5Research Council on Structural Connections (RCS
33、C), http:/boltcouncil.orgF3125 152limits is important for assembly strength and users are encouraged to usethe smallest nut overtap which permits consistent free assembly.5. Product Marking5.1 At a minimum all bolts shall be marked as required inTable 1. Marking shall be on the bolt head and may be
34、raisedor depressed at the manufacturers option. The marking shallbe visible after coating.5.2 Grade and Type marking, and the manufacturers markshall be in separate and distinct locations on the head. Othermarkings, such as private label distributors mark shall also beseparate and distinct.6. Chemic
35、al Composition6.1 120ksi/830MPA Type 1 bolts shall be carbon steel,carbon boron steel, alloy steel or alloy steel with boronaddition at the manufacturers option, conforming to thechemical composition specified in Table 2.6.2 150ksi/1040MPA bolts Type 1 shall be alloy steel oralloy steel with boron a
36、ddition at the manufacturers option,conforming to the chemical composition specified in Table 2.The steel shall be qualified as alloy steel, per Table 2 FootnoteD.6.3 Type 3 bolts shall be weathering steel and shall conformto the chemical compositions specified in Table 2. Optionally,the chemical co
37、mposition may have a Corrosion Index of 6 orgreater, as calculated from the Heat Analysis, and as describedin Guide G101 Predictive Method, based on the data ofLarabee and Coburn. See Guide G101 for methods of estimat-ing the atmospheric corrosion resistance of low alloy steels.6.4 If performed, pro
38、duct analysis made on finished boltsrepresenting each lot shall conform to the product analysisrequirements specified in Table 2 Footnote C.6.5 Heats to which bismuth, selenium, tellurium, or lead hasbeen intentionally added shall not be permitted.6.6 Chemical analysis shall be performed in accordan
39、cewith A751.7. Materials and Manufacture7.1 Production Method:7.1.1 Bolts shall be cold formed, warm formed, hot formed,hot forged, machined, or any combination thereof.7.2 Heat Treatment:7.2.1 All Bolts shall be quenched in oil from the austenitiz-ing temperature.7.2.2 All Bolts shall be tempered b
40、y reheating to not lessthan 800F/427C.7.3 Threads may be rolled or cut.7.4 Coatings and Other Finishes:7.4.1 Permitted coatings, including supplementary lubrica-tion and nut oversize requirements are provided in Annex A1.7.4.2 When coated fasteners are required, the purchasershall specify the proces
41、s and any additional special require-ments.7.4.3 Threaded components (bolts and nuts) shall be coatedby the same process, limited to one process per item with nomixed processes in a lot.7.4.4 Other coatings are not permitted for 150 ksi/1040 MPaminimum strength level fasteners.7.5 Secondary Processi
42、ng:7.5.1 Lot control and full traceability shall be maintainedthroughout all outside or secondary processes.7.5.2 Lots to which secondary processing has been per-formed by any party after sale from the manufacturer must beTABLE 1 Dimensions, Threads, Marking, Matching ComponentsInch Metric Inch Metr
43、ic120 ksi Min Tensile 830 MPa Min Tensile 150 ksi Min Tensile 1040 MPa Min TensileType 1 Type 3 Type 1 Type 3 Type 1 Type 3 Type 1 Type 3Style - Heavy Hex BoltsDimensions, ASMEBB18.2.6 B18.2.6 B18.2.6M B18.2.6M B18.2.6 B18.2.6 B18.2.6M B18.2.6MThread Fit, ASMEBB1.1 UNC 2A B1.1 UNC 2A B1.13M MC 6g B1
44、.13M MC 6g B1.1 UNC 2A B1.1 UNC 2A B1.13M MC 6g B1.13M MC 6gGrade MarkingA,DA325 A325 A325M A325M A490 A490 A490M A490MStyle - Twist-Off BoltsDimensions, ASMEBB18.2.6 B18.2.6FFB18.2.6 B18.2.6FFThread Fit, ASMEBB1.1 UNC 2A B1.1 UNC 2A B1.1 UNC 2A B1.1 UNC 2AGrade MarkingA,DA325TC A325TC A490TC A490TC
45、Alt. MarkingA,CA325 A325FFA490 A490FFRecommended Nut andWasherPlain Nut A563 DH A563 DH3 A563M 10S A563M 10S3 A563 DH A563 DH3 A563M 10S A563M 10S3Suitable AlternativeEDH3, D, C, C3 C3 8S, 8S3, 10S3 8S3 10S3Coated Nut A563 DH A563 DH3 A563M 10S A563M 10S3 A563 DH A563 DH3 A563M 10S A563M 10S3Flat, B
46、evel orThick Washer if used F436 -1 F436 -3 F436M -1 F436M -3 F436 -1 F436 -3 F436M -1 F436M -3AA325 and A325M bolts lengths up to 4D which are fully threaded but which are not required to be fully threaded by the relevant ASME standard shall be marked witha “T”, see Supplementary Requirement S1. Bo
47、lts with any other non-standard dimensions, including thread length, shall be marked with an “S”, see SupplementaryRequirement S2.BManufactured to the latest revision at the time of manufacture, UNC for inch series and Metric Coarse (MC) for Metric Series.CPreviously used markings may be sold and us
48、ed indefinitely, bolts must be manufactured to current marking requirements upon initial publication of this standard.DOther distinguishing markings for type 3 are permitted at the manufacturers option.EASTM A194/A194M 2H heavy hex nuts may be used in place of A563 DH nuts on type 1 A325, A490, F185
49、2 and F2280 bolts. When coated, the same requirementsof A563 and this specification, and Annex A1, including overtap, coating, rotational capacity and proof load testing apply.FMetric dimensions and requirements for this style have not been established.F3125 153traceable using a lot number which differs from the manufac-turers original lot number.7.5.3 If processing that can affect mechanical properties isperformed after initial testing, the bolts shall be retested for allspecified mechanical properties and performance requirementsaffected by the processing. T
