1、Designation: F3042 13Standard Specification forNonferrous Hex Socket, Slotted Headless, and Square HeadSet Screws1This standard is issued under the fixed designation F3042; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year o
2、f 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 the requirements for nonfer-rous socket set screws sizes 0.125 (#5) through 2.000 in.,squa
3、re head set screws sizes 0.190 (#10) through 1.500 in., andslotted headless set screws 0.125 (#5) through 0.750 in. indiameter manufactured from a number of nonferrous alloys inuse in the marine industry and the U.S. Navy subject toseawater wetting and salt atmosphere but that also may be usedin oth
4、er applications. It is recommended that copper-basedalloys not be used in attempting to prevent mechanical com-ponents from rotating, such as locking shafts, because of thelow hardness of the alloys. Some alloys or sizes or both of setscrews may not be readily available. Manufacturers or suppli-ers
5、should be contacted before design development or antici-pated procurement.1.2 UnitsThe values stated in inch-pound units are to beregarded as the standard.NOTE 1A complete metric companion to Specification F3042 will bedevelopedF3042M; therefore, no metric equivalents are shown in thisspecification.
6、1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced D
7、ocuments2.1 ASTM Standards:2B154 Test Method for Mercurous Nitrate Test for CopperAlloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in Unallo
8、yedCopper by GravimetryE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes (Withdrawn 2002)3E55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (
9、Withdrawn 2010)3E75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys (Withdrawn 2010)3E76 Test Methods for Chemical Analysis of Nickel-CopperAlloys (Withdrawn 2003)3E120 Test Methods for Chemical Analysis of Titanium andTitanium Alloys (Withdrawn 2003)3E165 Practice f
10、or Liquid Penetrant Examination for GeneralIndustryE350 Test Methods for Chemical Analysis of Carbon Steel,Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, andWrought IronE354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron,Nickel, and Cobal
11、t AlloysE384 Test Method for Knoop and Vickers Hardness ofMaterialsE478 Test Methods for Chemical Analysis of Copper AlloysE1409 Test Method for Determination of Oxygen and Nitro-gen in Titanium and Titanium Alloys by Inert Gas FusionF788/F788M Specification for Surface Discontinuities ofBolts, Scre
12、ws, and Studs, Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ASME Standards:4ASME B1.1 Unified Inch Screw Threads (UN and UNRThread Form)ASME B18.3 Socket Cap, Shoulder and Set Screws, Hexand Spline Keys (Inch Series)1Th
13、is test method is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.04 on NonferrousFasteners.Current edition approved Nov. 1, 2013. Published March 2014. DOI: 10.1520/F3042-13.2For referenced ASTM standards, visit the ASTM website, www.ast
14、m.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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American Society of Mech
15、anical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1ASME B18.6.2 Slotted Head Cap Screws, Square Head SetScrews, and Slott
16、ed Headless Set Screws Inch Series2.3 SAE Standards:5AMS2485 Coating, Black OxideAMS2487 Anodic Treatment of Titanium and TitaniumAlloys Solution pH 12.4 MaximumAMS2488 Anodic TreatmentTitanium and Titanium Al-loys Solution pH 13 or HigherJ2656 Fastener Part StandardHexagon Socket, SquareHead, and S
17、lotted Headless Set ScrewsInch Dimen-sioned2.4 Federal Standards and Specifications:QQ-N-286 Nickel-Copper-Aluminum Alloy, Wrought (UNSN05500)3. Classification3.1 The designation of the alloys of this specification shallbe consistent with the nonferrous designations in Table 1.4. Ordering Informatio
18、n4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity (number of screws);4.1.2 Name of the screw (hex socket set screw, slottedheadless set screw, or square head set screw);4.1.3 Dimensions, including nominal thread designation,thread pitch and fit,
19、nominal screw length (inches), and pointconfiguration. A standard part number in accordance with anationally recognized organization or society may be used forthis definition;4.1.4 Alloy number;4.1.5 Stress relieving, if required;4.1.6 If titanium is not to be coated;4.1.7 Black oxide coating, if re
20、quired (not recommended);4.1.8 Shipment lot testing, as required;4.1.9 Source inspection, if required;4.1.10 Certificate of compliance or test report, if required;4.1.11 Additional requirements, if any, to be specified on thepurchase order (see Supplementary Requirements); and4.1.12 ASTM Internation
21、al specification and year of issue.4.2 Example50 000 pieces, 0.250-20 0.375 cone point,nickel copper socket set screw, stress relieved, ASTMF304213.5. Materials and Manufacture5.1 Materials:5.1.1 The screws shall be manufactured from materialhaving a chemical composition conforming to the requiremen
22、tsin Table 1 and capable of developing the required mechanicalproperties for the specified alloy in the finished fastener.5.1.2 The starting condition of the raw material shall be atthe discretion of the fastener manufacturer but shall be suchthat the finished products conform to all of the specifie
23、drequirements.5.2 Manufacture:5.2.1 FormingThe screw may be forged, cold or hotformed, or machined from suitable material at the option of thesupplier to meet requirements.5.2.2 ConditionThe fasteners shall be furnished in thefollowing conditions:Alloy ConditionCopper (all alloys) As formed or stres
24、s relieved atmanufacturers optionNickel alloys:400 and 405 As formed or stress relieved atmanufacturers option500 Solution annealed and aged625 Annealed686 As formedTitanium As formed5.2.3 Stress RelievingWhen required, stress relieving shallbe specified by the purchaser for nickel alloys 400 and 40
25、5 andall copper alloys.5.2.4 ThreadsUnless otherwise specified, the threads shallbe rolled or cut at the option of the manufacturer.6. Chemical Composition6.1 The analysis of the screw material shall conform to thechemical composition specified in Table 1.6.2 Manufacturers AnalysisWhen test reports
26、are re-quired on the inquiry or purchase order (see 4.1.8), themanufacturer shall make individual analyses of randomlyselected finished fasteners from the product to be shipped andreport the results to the purchaser, except as provided in 6.3.2.Alternatively, if heat and lot identities have been mai
27、ntained,the analysis of the raw material from which the fasteners havebeen manufactured may be reported instead of product analy-sis.6.3 Product Analysis:6.3.1 Product analyses may be made by the purchaser fromfinished products representing each lot. The chemical compo-sition thus determined shall c
28、onform to the requirements inTable 1.6.3.2 In the event of disagreement, a referee chemicalanalysis of samples from each lot shall be made in accordancewith 11.1 and 11.1.1.7. Mechanical Properties7.1 The hardness limits from Table 2 shall be met asdetermined using Test Methods E18.8. Dimensions8.1
29、Unless otherwise specified by the purchaser, the productshall conform to the requirements of ASME B18.3 for hexsocket set screws or ASME B18.6.2 for slotted headless setscrews or square head set screws. Threads shall be in accor-dance with ASME B1.1. Unless otherwise specified by thepurchaser, socke
30、t set screws shall be UNC-3Aand square headset screws and slotted headless set screws shall be UNC-2A.9. Workmanship, Finish, and Appearance9.1 WorkmanshipScrews shall be clean and have a work-manlike finish free of injurious burrs, seams, laps, irregular5Available from SAE International (SAE), 400
31、Commonwealth Dr., Warrendale,PA 15096-0001, http:/www.sae.org.F3042 132TABLE 1 Chemical RequirementsComposition, %UNSDesig-nationNumberCopper and Copper-Base AlloysAlloyGeneralNameAluminumCopper,minIron,maxManganese,maxNickel,maxPhos-phorusSiliconZinc,maxALead,maxTinArsenic,maxC26000 260 brass . . .
32、 68.5-71.50.05 . . . . . . . . . . . . balance 0.07 . . . . . .C27000 270 brass . . . 63.0-68.50.07 . . . . . . . . . . . . balance 0.10 . . . . . .C27400 274 brass . . . 61.0-64.00.05 . . . . . . . . . . . . balance 0.10 . . . . . .C46200 462 navalbrass. . . 62.0-65.00.10 . . . . . . . . . . . . ba
33、lance 0.20 0.5-1.0 . . .C46400 464 navalbrass. . . 59.0-62.00.10 . . . . . . . . . . . . balance 0.20 0.5-1.0 . . .C61300 613 aluminumbronze6.0-7.5A2.0-3.0 0.10 0.15B0.015 0.10 0.05 0.01 0.20-0.50.C61400 614 aluminumbronze6.0-8.0 88.0C1.5-3.5 1.0 . . . . . . .C63000 630 aluminumbronze9.0-11.0 78.0C2
34、.0-4.0 1.5 4.0-5.5 . . . 0.25max. . 0.20max.C65100 651 siliconbronze. 96.0C0.8 0.7 . . . . . . 0.8-2.0 1.5 0.05 . . . . . .C65500 655 siliconbronze. 94.8C0.8 1.5 0.6 . . . 2.8-3.8 1.5 0.05 . . . . . .C66100 661 siliconbronze0.25max94.0C0.25 1.5 . . . . . . 2.8-3.5 1.5 0.20-0.8 . . . . . .Nickel and
35、Nickel-Base AlloysUNSDesig-nationNum-berAlloyGen-eralNameAlumi-numCar-bon,maxChro-miumCop-perDIron,maxMan-ga-nese,maxNick-elDPhos-phor-us,maxSili-con,maxTita-niumCo-balt,maxMolyb-de-numSul-fur,maxVana-diumTung-stenN04400 400 Ni-CuClassA. 0.3 . bal-ance2.5 2.0 63.0-70.0. 0.5 .E. 0.024 . .N04405 405 N
36、i-CuClassB. 0.3 . bal-ance2.5 2.0 63.0-70.0. 0.5 .E. . . 0.025-0.060. .N05500 500 Ni-Cu-Al2.30-3.150.25 . . . bal-ance2.0 1.5 63.0-70.0. . . 0.5 0.35-0.85E. 0.01 . .N06625 625FNi-Cr-Mo-Cb0.40max0.010 20.0-23.0. 5.0max0.50 58.0min0.015 0.50max0.40max1.00max8.0-10.00.015 . . . 3.2-4.2N06686 686 Ni-Cr-
37、Mo-W. . . 0.010max19.0-23.0. 5.0max0.75maxbal-ance0.04max0.08max0.02-0.25. . . 15.0-17.00.02max. . . 3.0-4.4Titanium and Titanium-Base AlloysGUNSDesig-nationNum-berAlloyGen-eralNameAlumi-num,AlCar-bon,CIron,FeTita-nium,TiHydro-gen,HNitro-gen,NOxy-gen,OPalla-dium,PdVana-dium,VChro-mium,CrMolyb-denum,
38、MoZirco-nium,ZrTin,SnSili-con,SiRuthe-nium,RuResidualsHeach,maxtotal,maxR55111 32 TitaniumTi-5-1-1-14.5-5.50.08 0.25 bal-ance0.0125 0.03 0.11 . . . 0.6-1.4. . . 0.6-1.20.6-1.40.6-1.40.06-0.14. 0.1 0.4R56401 23 TitaniumTi-6Al-4VELI5.5-6.50.08 0.25 bal-ance0.0125 0.05 0.13 . . . 3.5-4.5. . . . . . 0.1
39、 0.4R58640 19 TitaniumTi-38-6-443.0-4.00.05 0.30 bal-ance0.0200 0.03 0.12 0.10I7.5-8.55.5-6.53.5-4.53.5-4.5. . 0.10I0.15 0.4ACopper plus specified elements = 99.8 min; copper plus silver = 88.591.5.BCobalt is to be counted as nickel.CMinimum content of copper plus all other elements with specified l
40、imits shall be 99.5 %.DElements shown as balance shall be arithmetically computed by deducting the sum of the other named elements from 100.ECobalt is to be counted as nickel.FAlloy 625 material shall be refined using the electroslag remelting process (ESR) or the vacuum arc remelting process (VAR).
41、GAll reported values are maximums, unless a range is specified.HA residual is an element present in a metal or an alloy in small quantities inherent to the manufacturing process but not added intentionally. Residual elements need notbe reported unless a report is specifically required by the purchas
42、er.IRuthenium and palladium, or both, may be added to Grade 19 for enhanced corrosion resistance as negotiated between purchaser and vendor. Chemical analysis is notrequired unless specifically required by the purchaser.F3042 133surfaces, and other imperfections affecting serviceability. Un-less oth
43、erwise prohibited by the purchaser, broach petalsadhering solidly to the bottom of the socket are acceptableprovided the socket dimensions are in accordance with ASMEB18.3.9.2 FinishUnless otherwise specified, except for titaniumalloy screws, the fasteners shall be furnished without anadditive chemi
44、cal or metallic finish.9.2.1 All titanium alloy fasteners shall be anodized inaccordance with SAE AMS2487 or AMS2488 Type 2 (excepttesting requirements may be negotiated between manufacturerand coating supplier) unless otherwise specified by the pur-chaser.9.2.2 Black oxide coating (BOC), if specifi
45、ed, shall be inaccordance with SAE AMS2485. Supplementary preservativetreatment is not required. It may be necessary to undercut thethreads before coating to allow for thread gaging after coating.9.3 Surface DiscontinuitiesThe surface discontinuities forthese products shall conform to Specification
46、F788/F788M andthe additional limitations specified herein.9.3.1 Processing cracks that connect the socket to theperiphery of the screw are not permissible. Defects originatingon the periphery with a traverse indicating a potential tointersect are not permissible. For peripheral discontinuities, them
47、aximum depth may be 0.06 D.10. Sampling and Number of Tests10.1 Guide F1470 shall be used to determine the necessarysampling plan and the number of tests that must be performedto demonstrate that all of the requirements of this standard aremet for each lot.11. Test Methods11.1 Chemical AnalysisThe c
48、hemical composition may bedetermined by any recognized commercial test method. In theevent of disagreement, the following test methods shall be usedfor referee purposes:Alloy Test MethodCopper E53, E54, E62, E75, E478Nickel E76, E350, E354Titanium E120, E140911.1.1 When agreed between the purchaser
49、andmanufacturer, samples for chemical analysis may be taken inaccordance with Practice E55 by drilling, sawing, milling,turning, clipping, or such other methods capable of producingrepresentative samples.11.2 The fastener manufacturer may accept the chemicalanalysis of each heat of raw material purchased and reported onthe raw material certification furnished by the raw materialproducer. The fastener manufacturer is not required to do anyfurther chemical analysis testing provided that precise heat lottraceability has been maintained throughout the manufactur
