ASTM A563-2007a Standard Specification for Carbon and Alloy Steel Nuts《碳和合金钢螺母标准规范》.pdf

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1、Designation: A 563 07aStandard Specification forCarbons and Alloy Steel Nuts1This standard is issued under the fixed designation A 563; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parenthe

2、ses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification2covers chemical and mechanicalrequirements for eigh

3、t grades of carbon and alloy steel nuts forgeneral structural and mechanical uses on bolts, studs, andother externally threaded parts.NOTE 1See Appendix X1 for guidance on suitable application of nutgrades.1.2 The requirements for any grade of nut may, at thesuppliers option, and with notice to the

4、purchaser, be fulfilledby furnishing nuts of one of the stronger grades specifiedherein unless such substitution is barred in the inquiry andpurchase order.1.3 Grades C3 and DH3 nuts have atmospheric corrosionresistance and weathering characteristics comparable to that ofthe steels covered in Specif

5、ications A 242/A 242M, A 588/A 588M, and A 709/A 709M. The atmospheric corrosionresistance of these steels is substantially better than that ofcarbon steel with or without copper addition (see 5.2). Whenproperly exposed to the atmosphere, these steels can be usedbare (uncoated) for many applications

6、.NOTE 2A complete metric companion to Specification A 563 hasbeen developedA 563M; therefore, no metric equivalents are presentedin this specification.1.4 Terms used in this specification are defined in Termi-nology F 1789 unless otherwise defined herein.2. Referenced Documents2.1 ASTM Standards:3A

7、194/A 194M Specification for Carbon and Alloy SteelNuts for Bolts for High Pressure or High TemperatureService, or BothA 242/A 242M Specification for High-Strength Low-AlloyStructural SteelA 307 Specification for Carbon Steel Bolts and Studs, 60000 PSI Tensile StrengthA 325 Specification for Structu

8、ral Bolts, Steel, HeatTreated, 120/105 ksi Minimum Tensile StrengthA 354 Specification for Quenched and Tempered AlloySteel Bolts, Studs, and Other Externally Threaded Fasten-ersA 394 Specification for Steel Transmission Tower Bolts,Zinc-Coated and BareA 449 Specification for Hex Cap Screws, Bolts a

9、nd Studs,Steel, Heat Treated, 120/105/90 ksi Minimum TensileStrength, General UseA 490 Specification for Structural Bolts, Alloy Steel, HeatTreated, 150 ksi Minimum Tensile StrengthA 588/A 588M Specification for High-Strength Low-AlloyStructural Steel, up to 50 ksi 345 MPa Minimum YieldPoint, with A

10、tmospheric Corrosion ResistanceA 687 Specification for High-Strength Nonheaded SteelBolts and Studs4A 709/A 709M Specification for Structural Steel forBridgesA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsB 695 Specification for Coatings of Zinc MechanicallyDepo

11、sited on Iron and SteelD 3951 Practice for Commercial PackagingF 606 Test Methods for Determining the Mechanical Prop-erties of Externally and Internally Threaded Fasteners,Washers, Direct Tension Indicators, and RivetsF 812/F 812M Specification for Surface Discontinuities ofNuts, Inch and Metric Se

12、riesF 1789 Terminology for F16 Mechanical FastenersF 2329 Specification for Zinc Coating, Hot-Dip, Require-ments for Application to Carbon and Alloy Steel Bolts,Screws, Washers, Nuts, and Special Threaded FastenersG 101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels2.2

13、ANSI Standards:1This 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 Dec. 1, 2007. Published January 2008. Originallyapproved in 1966. Last previous edit

14、ion approved in 2007 as A 563 07.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA 563 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStanda

15、rds volume information, refer to the standards Document Summary page onthe ASTM website.4Withdrawn.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Copyright by ASTM In

16、tl (all rights reserved); Sun Feb 24 21:20:43 EST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.ANSI B1.1 Unified Screw Threads5ANSI B18.2.2 Square and Hex Nuts53. Ordering Information3.1 Orders for nuts under this specification shall in

17、clude thefollowing:3.1.1 Quantity (number of nuts),3.1.2 Nominal size and thread series of nuts,3.1.3 Style of nut (for example, heavy hex),3.1.4 Grade of nut,3.1.5 Zinc CoatingSpecify the zinc-coating process re-quired, for example, hot-dip, mechanically deposited, or nopreference (see 4.7),3.1.6 O

18、ther FinishesSpecify other protective finish ifrequired,3.1.7 ASTM designation and year of issue, and3.1.8 Supplementary or special requirements.NOTE 3An example of an ordering description follows: 100078-9heavy hex nuts, Grade DH, hot-dip zinc-coated, and lubricated, ASTM A563XX.4. Materials and Ma

19、nufacture4.1 Steel for nuts shall be made by the open-hearth, basic-oxygen, or electric-furnace process except that steel for GradesO, A, and B nuts may be made by the acid-bessemer process.4.2 Nuts may be made cold or hot by forming, pressing, orpunching or may be machined from bar stock.4.3 Grades

20、 DH and DH3 nuts shall be heat treated byquenching in a liquid medium from a temperature above thetransformation temperature and tempering at a temperature ofat least 800F.4.4 Grades C and D nuts made of steel having carboncontent not exceeding 0.20 %, phosphorus not exceeding0.04 %, and sulfur not

21、exceeding 0.05 % by heat analysis maybe heat treated by quenching in a liquid medium from atemperature above the transformation temperature and need notbe tempered. When this heat treatment is used, there shall beparticular attention to the requirements in 6.1.1.4.5 Grades C, C3, and D nuts made of

22、any steel permittedfor these grades may be heat treated by quenching in a liquidmedium from a temperature above the transformation tempera-ture and tempering at a temperature of at least 800F.4.6 Threads shall be formed by tapping or machining.4.7 Zinc Coatings, Hot-Dip and Mechanically Deposited:4.

23、7.1 When zinc-coated fasteners are required, the pur-chaser shall specify the zinc coating process, for example,hot-dip, mechanically deposited, or no preference.4.7.2 When hot-dip is specified, the fasteners shall bezinc-coated by the hot-dip process in accordance with therequirements of Specificat

24、ion F 2329.4.7.3 When mechanically deposited is specified, the fasten-ers shall be zinc coated by the mechanical deposition processin accordance with the requirements of Class 55 of Specifica-tion B 695.4.7.4 When no preference is specified, the supplier mayfurnish either a hot-dip zinc coating in a

25、ccordance withSpecification F 2329, or a mechanically deposited zinc coatingin accordance with Specification B 695, Class 55. Threadedcomponents (bolts and nuts) shall be coated by the samezinc-coating process and the suppliers option is limited to oneprocess per item with no mixed processes in a lo

26、t.4.7.5 Hot-dip zinc-coated nuts shall be tapped after zinccoating.4.7.6 Mechanically deposited zinc-coated nuts for assemblywith mechanically deposited zinc-coated bolts shall be tappedoversize prior to zinc coating and need not be retappedafterwards.4.8 Lubricant:4.8.1 Hot-dip and mechanically dep

27、osited zinc-coatedGrade DH nuts shall be provided with an additional lubricantwhich shall be clean and dry to the touch (see SupplementaryRequirement S1 to specify lubrication requirements for plainfinish nuts).4.8.2 See Supplementary Requirement S2 for option tospecify a dye in the lubricant.5. Che

28、mical Composition5.1 Grades O, A, B, C, D, and DH shall conform to thechemical composition specified in Table 1.5.2 Grades C3 and DH3 shall conform to the chemicalcomposition specified in Table 2. See Guide G 101 for methodsof estimating the atmospheric corrosion resistance of low alloysteels.5.3 Re

29、sulfurized or rephosphorized steel, or both, are notsubject to rejection based on product analysis for sulfur orphosphorus.5.4 Application of heats of steel to which bismuth, sele-nium, tellurium, or lead has been intentionally added shall notbe permitted for Grades D, DH, and DH3.5.5 Chemical analy

30、ses shall be performed in accordancewith Test Methods, Practices, and Terminology A 751.6. Mechanical Properties6.1 Hardness:6.1.1 The hardness of nuts of each grade shall not exceedthe maximum hardness specified for the grade in Table 3.5Available from American National Standards Institute (ANSI),

31、25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.TABLE 1 Chemical Requirements for Grades O, A, B, C, D, andDH NutsGrade ofNutComposition, %Analysis Carbon Manganese,minPhospho-rus, maxSulfur,maxO, A, B, C heat 0.55 max . 0.12 0.15Aproduct 0.58 max . 0.13B.DCheat 0.55 max 0.30 0.04 0

32、.05product 0.58 max 0.27 0.048 0.058heat 0.200.55 0.60 0.04 0.05DHCproduct 0.180.58 0.57 0.048 0.058AFor Grades O, A, and B a sulfur content of 0.23 % max is acceptable with thepurchasers approval.BAcid bessemer steel only.CFor Grades D and DH a sulfur content of 0.05 0.15 % is acceptable providedth

33、e manganese is 1.35 % min.A 563 07a2Copyright by ASTM Intl (all rights reserved); Sun Feb 24 21:20:43 EST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.6.1.2 Jam nuts, slotted nuts, nuts smaller in width acrossflats or thickness than sta

34、ndard hex nuts (7.1), and nuts thatwould require a proof load in excess of 160 000 lbf may befurnished on the basis of minimum hardness requirementsspecified for the grade in Table 3, unless proof load testing isspecified in the inquiry and purchase order.6.2 Proof Load:6.2.1 Nuts of each grade, exc

35、ept those listed in 6.1.2, shallwithstand the proof load stress specified for the grade, size,style, thread series, and surface finish of the nut in Table 3 andTable 4.6.2.2 Nuts hot dip or mechanically zinc coated in accor-dance with 4.7.2 or 4.7.3 shall be proof load tested after zinccoating and o

36、vertapping.67. Dimensions7.1 Unless otherwise specified, nuts shall be plain (un-coated) and shall conform to the dimensions prescribed inANSI B18.2.2.7.2 Hex and hex-slotted nuts over 112 to 2 in. inclusiveshall have dimensions conforming to ANSI B18.2.2 calculatedusing the formulas for the 114 thr

37、ough 112-in. size range inAppendix III (Formulas for Nut Dimensions) ofANSI B18.2.2.7.3 Threads: Plain (Uncoated) Nuts7.3.1 Unless otherwise specified, the threads shall conformto the dimensions for coarse threads with Class 2 B tolerancesprescribed in ANSI B1.1.7.4 Threads: Nuts Hot Dip Zinc Coated

38、 SpecificationF 2329( 4.7.2)7.4.1 Nuts to be used on bolts with Class 2A threads beforehot-dip zinc coating, and then hot-dip zinc coated in accor-dance with Specification F 2329, shall be tapped oversize aftercoating, to the minimum and maximum thread dimensions inTable 5. The major and minor diame

39、ters shall also be increasedby the allowance to provide the corresponding minimum andmaximum major and minor diameters.7.5 Threads: Nuts With Other Coatings7.5.1 Nuts to be used on bolts mechanically zinc coated oron bolts hot-dip zinc-coated to a specification other thanSpecification F 2329, or oth

40、erwise hot-dip coated, shall betapped oversize by a diametral amount sufficient to permitassembly on the coated bolt thread, unless other requirementsare specified in the inquiry or purchase order.7.5.2 When specifically permitted by the purchaser, nuts forbolts with electrodeposited coating, such a

41、s cadmium, zinc,and so forth, or with chemically applied coating may be tapped6Rotational capacity test procedures, nut rotations, and acceptance criteria are afunction of the bolt with which the nuts will be used. When required, they arecovered by the applicable bolt specification.TABLE 2 Chemical

42、Requirements for Grades C3 and DH3 NutsElement Composition, %Classes for Grade C 3 NutsAGrade DH3NutsNABCDEFCarbon:Heat analysis . 0.330.40 0.380.48 0.150.25 0.150.25 0.200.25 0.200.25 0.200.53Product analysis . 0.310.42 0.360.50 0.140.26 0.140.26 0.180.27 0.190.26 0.190.55Manganese:Heat analysis .

43、0.901.20 0.700.90 0.801.35 0.401.20 0.601.00 0.901.20 0.40 minProduct analysis . 0.861.24 0.670.93 0.761.39 0.361.24 0.561.04 0.861.24 0.37 minPhosphorus:Heat analysis 0.070.15 0.040 max 0.060.12 0.035 max 0.040 max 0.040 max 0.040 max 0.046 maxProduct analysis 0.070.155 0.045 max 0.060.125 0.040 ma

44、x 0.045 max 0.045 max 0.045 max 0.052 maxSulfur:Heat analysis 0.050 max 0.050 max 0.050 max 0.040 max 0.050 max 0.040 max 0.040 max 0.050 maxProduct analysis 0.055 max 0.055 max 0.055 max 0.045 max 0.055 max 0.045 max 0.045 max 0.055 maxSilicon:Heat analysis 0.200.90 0.150.35 0.300.50 0.150.35 0.250

45、.50 0.150.35 0.150.35 .Product analysis 0.150.95 0.130.37 0.250.55 0.130.37 0.200.55 0.130.37 0.130.37 .Copper:Heat analysis 0.250.55 0.250.45 0.200.40 0.200.50 0.300.50 0.300.60 0.200.40 0.20 minProduct analysis 0.220.58 0.220.48 0.170.43 0.170.53 0.270.53 0.270.63 0.170.43 0.17 minNickel:Heat anal

46、ysis 1.00 max 0.250.45 0.500.80 0.250.50 0.500.80 0.300.60 0.200.40 0.20 minBProduct analysis 1.03 max 0.220.48 0.470.83 0.220.53 0.470.83 0.270.63 0.170.43 0.17 minChromium:Heat analysis 0.301.25 0.450.65 0.500.75 0.300.50 0.501.00 0.600.90 0.450.65 0.45 minProduct analysis 0.251.30 0.420.68 0.470.

47、83 0.270.53 0.451.05 0.550.95 0.420.68 0.42 minVanadium:Heat analysis . . . 0.020 min . . . .Product analysis . . . 0.010 min . . . .Molybdenum:Heat analysis . . 0.06 max . 0.10 max . . 0.15 minBProduct analysis . . 0.07 max . 0.11 max . . 0.14 minTitanium:Heat analysis . . . . 0.05 max . . .Product

48、 analysis . . . . . . . .AC3 nuts may be made of any of the above listed material classes. Selection of the class shall be at the option of the manufacturer.BNickel or molybdenum may be used.A 563 07a3Copyright by ASTM Intl (all rights reserved); Sun Feb 24 21:20:43 EST 2008Downloaded/printed byGuo

49、Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.oversize by a diametral amount sufficient to permit assemblyon the coated bolt thread.7.5.3 The allowable oversize tapping shall not exceed thatspecified in Table 5.8. Workmanship8.1 Surface discontinuity limits shall be in accordance withSpecification F 812/F 812M.TABLE 3 Mechanical RequirementsNuts with UNC, 8 UN, 6 UN and Coarser Pitch ThreadsGrade of Nut Nominal Nut Size,in.Style of Nut Pro