1、Designation: F3148 17F3148 17aStandard Specification forHigh Strength Structural Bolt Assemblies, Steel and AlloySteel, Heat Treated, 144ksi Minimum Tensile Strength, InchDimensions1This standard is issued under the fixed designation F3148; the number immediately following the designation indicates
2、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 covers chemical, dimensional,
3、 physical and mechanical requirements for quenched and tempered boltsmanufactured from steel and alloy steel, in inch dimensions. The bolts are available as structural bolting assemblies which includea fixed spline bolt, a suitable nut and at least one washer covered by reference herein.1.2 Intended
4、 Use:1.2.1 Bolts manufactured under this specification, and structural bolting assemblies supplied under this specification, areintended for use in structural connections covered in the Specification for Structural Joints Using High-Strength Bolts and installedusing the torque-and-angle or part turn
5、/combined installation method.1.2.2 Structural bolting assemblies in this specification are furnished in nominal diameters from 12 to 1-14 in. inclusive.1.3 Classification:1.3.1 Structural bolting assemblies are designated as Grade 144.1.3.2 Bolts are designated by type denoting raw material chemica
6、l composition.Type 1 - 144ksi - carbon steel, carbon boron steel, alloy steel or alloy steel with boron additionType 3 - 144ksi - weathering steel1.4 Terms used in the specification are defined in Terminology F1789.1.4.1 Torque-and-Angle Fixed-Spline Structural Boltbolt that includes an integral fix
7、ed-spline end which extends beyond thethreaded portion of the bolt and is used as a component of a torque-and-angle fixed-spline structural bolting assembly.1.4.2 Torque-and-Angle Fixed-Spline Structural Bolting Assembly2 a fastener assembly comprised of a torque-and-anglefixed-spline bolt with a su
8、itable nut and at least one washer, installed and tightened using a special electric wrench and socketsystem which has an inner socket that engages the fixed-spline end of the bolt and with an outer socket that engages and turns thenut, in two separate and distinct operations, the first is a control
9、led torque application and the second is a specified angle.1.4.3 Combined MethodA tightening method comprised of two steps, the first tightening step using a torque regulating tooland the second tightening step in which a specified turn is applied to the turned part of the assembly. Also known as th
10、e part turnmethod.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use
11、.1.6 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any itemmentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights
12、, are entirely their own responsibility.1.7 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Tra
13、de Organization Technical Barriers to Trade (TBT) Committee.1 This specification is under the jurisdiction of ASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivetsand Washers.Current edition approved March 1, 2017May 15, 2017. Published
14、March 2017June 2017. Originally approved in 2015. Last previous edition approved in 20152017 asF314815.17. DOI: 10.1520/F3148-1710.1520/F3148-17A2 The torque-and-angle fixed-spline structural bolting system has a patent application pending. Interested parties are invited to submit information regard
15、ing theidentification of an alternative(s) to this patent-pending item to the ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend.This document is not an ASTM standard and is intended only to provi
16、de the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the s
17、tandard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12. Referenced Documents2.1 ASTM Standards:3A563 Specification for Carbon and Alloy Steel NutsA751 Test Methods, Pra
18、ctices, and Terminology for Chemical Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically Deposited on Iron and SteelE709 Guide for Magnetic Particle TestingE1444/E1444M Practice for Magnetic Particle TestingF436/F436M Specification for Hardened Steel Washers Inch and Metri
19、c DimensionsF606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners,Washers, Direct Tension Indicators, and RivetsF788 Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric SeriesF1136/F1136M Specification for
20、 Zinc/Aluminum Corrosion Protective Coatings for FastenersF1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance InspectionF1789 Terminology for F16 Mechanical FastenersF2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered Thre
21、aded Steel Bolts,Screws, Studs, and NutsF2833 Specification for Corrosion Protective Fastener Coatings with Zinc Rich Base Coat and Aluminum Organic/InorganicTypeG101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels2.2 ASME Standards:4B 1.1 Unified Screw ThreadsB 18.2.6
22、Fasteners for Use in Structural ApplicationsB 18.18 Quality Assurance for Fasteners2.3 RCSC:5Specification for Structural Joints Using High-Strength Bolts3. Ordering Information3.1 Orders for structural bolting assemblies under this specification shall include:3.2 Mandatory ordering information:3.2.
23、1 ASTM F3148 designation and revision,3.2.2 QuantityNumber of assemblies,3.2.3 Grade 144,3.2.4 SizeIncluding nominal diameter and bolt length,3.2.5 TypeType 1 or Type 3. When Type is not specified either Type 1 or Type 3 may be furnished at the suppliers option.3.2.6 Coatings or finishesIf other tha
24、n plain finish, specify the coating process or finish required, see Table 1.3.3 Additional ordering information when specified by purchaser;3.3.1 Test reports, see Section 15.3.3.2 Additional details of other assembly components.3.3.3 Rotational capacity testing of assemblies per Annex A1.3.3.4 Obse
25、rvation or inspection requirements. See 14.2.3.3.5 Country of origin.3.3.6 Supplementary requirements.NOTE 1A typical description follows: 1000 pieces 34-10 3 in. ASTM F3148-15, Grade 144, Type 1, each with one hardened ASTM F436/F436MType 1 washer, and one A563 Grade DH heavy hex nut.4. Dimensions4
26、.1 Head and Body:4.1.1 Bolts shall be round head conforming to the dimensions specified in Table 2.4.1.2 The thread length shall not be changed except as provided in Supplementary Requirement S1. Other dimensions shall notbe changed.4.2 Threads:3 For referencedASTM standards, visit theASTM website,
27、www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., Ne
28、w York, NY 10016-5990, http:/www.asme.org.5 Research Council on Structural Connections (RCSC) http:/www.boltcouncil.org/F3148 17a24.2.1 Uncoated bolt threads shall be as specified in Table 2.4.2.2 Coated bolt threads shall be as specified in Table 2 before coating.4.3 The gauging limit for coated bo
29、lts shall be verified during manufacture. In case of dispute, a calibrated thread ring gaugeof the same size as the oversize limit in Table 1 (Class X tolerance, gauge tolerance plus) shall be used to verify conformance.The gauge shall assemble with hand effort following application of light machine
30、 oil to prevent galling and damage to the gauge.These inspections, when performed to resolve controversy, shall be conducted at the frequency specified in the quality assuranceprovisions of ASME B 18.18.NOTE 2It is the intent of this specification that coated nuts and bolts assemble freely when orde
31、red together. It is recognized that the batch natureof coating processes and the cumulative effect of coating thickness may create intermittent assembly problems.5. Product Marking5.1 At a minimum all assemblies shall be marked as required in Table 2. Marking shall be on the bolt head and shall be r
32、aisedor depressed, at the manufacturers option. The marking shall be visible after coating.5.2 Grade/Type marking, the manufacturers mark, and the private label distributors mark (if used), shall be in separate anddistinct locations.6. Chemical Composition6.1 Type 1 bolts shall be carbon steel, carb
33、on boron steel, alloy steel or alloy steel with Boron addition at the manufacturersoption, conforming to the chemical composition specified in Table 3.6.2 Type 3 bolts shall be weathering steel and shall conform to the chemical compositions A or B specified in Table 3.Optionally, the chemical compos
34、ition may have a Corrosion Index of 6 or greater, as calculated from the Heat Analysis, and asdescribed in Guide G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels.6.3 Product analysis made on finished bolts representing each lot shall conform to the product analysis
35、requirements specifiedin Table 3, Footnote A.TABLE 1 Permitted CoatingsGB695A,F F1136/F1136MD,F F2833E,FBolt Class 55 Grade 3 Grade 1Nut Class 55 Grade 5 Grade 1Washer Class 55 Grade 3 Grade 1Bolt Pitch Bolt Pitch Bolt PitchNut Pitch Dia. OS After Nut Pitch Dia. OS After Nut Pitch Dia. OS AfterOvert
36、ap CoatingC OvertapB CoatingC OvertapB CoatingCin. in. in. in. in. in.12-13 UNC 0.018 0.012 0.009 0.006 0.009 0.00658-11 UNC 0.020 0.013 0.010 0.007 0.010 0.00734-10 UNC 0.020 0.013 0.010 0.007 0.010 0.00778-9 UNC 0.022 0.015 0.011 0.008 0.011 0.0081-8 UNC 0.024 0.016 0.012 0.008 0.012 0.0081 18-7 U
37、NC 0.024 0.016 0.012 0.008 0.012 0.0081 14-7 UNC 0.024 0.016 0.012 0.008 0.012 0.008A Supplementary nut lubrication to A563 S1, S2 or S3 is required for mechanically deposited zinc coatings.B Nut overtap shall not exceed this amount unless agreed upon between the purchaser and user. If a larger over
38、tap is used or required, coated structural bolt assemblesshall pass the RC test requirements per F3148, Annex A1 as proof of assembly, ductility and thread strength.C Bolt pitch oversize limit in case of dispute. Material within the plain gage limits which meets the coating thickness requirements an
39、d assembles freely need not bemeasured to this tolerance.D Grade 5 of this coating meets the supplementary lubrication requirements of A563 S1.E Grade 1 of this coating meets the supplementary lubrication requirements of A563 S1.F Nuts overtapped for coating shall be proof load tested to a minimum o
40、f 175 000 psi.G Other finishes specify other protective finish, if required.OS= OversizeTABLE 2 Dimensions, Threads, Marking, and MatchingComponentsType 1 Type 3Round Head Dimensions,ASMEA B18.2.6 B18.2.6Thread Fit, ASME B1.1 UNC 2A B1.1 UNC 2AGrade Marking 144 144Nut A563 DH A563 DH3Flat Washer F43
41、6/F436M 1 F436/F436M 3A All dimensions except spline geometryF3148 17a36.4 Heats to which bismuth, selenium, tellurium, or lead has been intentionally added shall not be permitted.6.5 Chemical analysis shall be performed in accordance with Test Methods, Practices, and TerminologyA751.7. Materials an
42、d Manufacture7.1 Structural bolting assemblies shall be certified, supplied and installed as matched sets. These assemblies shall be capableof developing a minimum predetermined initial and final tension when installed using an appropriate fixed spline-drive installationtool. See Appendix X1.7.2 Pro
43、duction Method:7.2.1 Bolts shall be cold formed, warm formed, hot formed, hot forged, machined, or any combination thereof.7.3 Heat Treatment:7.3.1 All Bolts shall be quenched in oil from the austenitizing temperature.7.3.2 All Bolts shall be tempered by reheating to not less than 800F/427C.7.4 Thre
44、ads shall be rolled or cut.7.5 Coatings and Other Finishes:7.5.1 Coatings, including supplementary lubrication and nut oversize requirements are provided in Table 1.7.5.2 When coated assemblies are required, the purchaser shall specify the coating process and any additional specialrequirements.7.5.3
45、 Threaded components of assemblies (bolts and nuts) shall be coated by the same process, limited to one process per itemwith no mixed processes in a component lot.7.5.4 Nut and washer components of the assemblies shall be in accordance with Table 2.7.6 Secondary Processing:7.6.1 Lot control and full
46、 traceability shall be maintained throughout all outside or secondary processes.7.6.2 Lots to which secondary processing has been performed by any party after sale from the manufacturer must be traceableusing a lot number which differs from the manufacturers original lot number.7.6.3 If processing t
47、hat can affect mechanical or performance properties is performed after initial testing, the bolts or assemblies,or both, shall be retested for all specified mechanical properties and performance requirements affected by the processing.7.6.4 When the secondary process is heat treatment, the bolts sha
48、ll be tested for all specified mechanical properties.7.6.5 Secondary processing, including lubrication, by any party other than that which certified the assembly lot shall not bepermitted unless under the direction of the manufacturer or responsible party.7.7 Lubrication:7.7.1 Assemblies shall have
49、at least one component lubricated by the responsible party to meet the assembly lot tensionrequirements.8. Testing and Lot Control8.1 Testing Responsibility:TABLE 3 Chemical RequirementsAType 1 Type 3Heat Analysis Carbon Steel with orwithoutAlloy Steel with orwithoutComposition Composition Based on CorrosionBoron Boron A B IndexBCarbon 0.30 0.52 0.30 0.48 0.33 0.40 0.38 0.48 0.30 0.52Manganese 0.60 min 0.60 min 0.90 1.20 0.70 0.90 0.60 minPhosphorus, max 0.035 0.035 0.035 0.035 0.035Sulfur, max 0.040 0.040 0.040 0.040 0.040Sili
