1、Designation: F3042 13 (Reapproved 2018)Standard 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 re
2、vision, 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 the requirements for nonfer-rous socket set screws sizes 0.125 (#5) thro
3、ugh 2.000 in.,square 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
4、 may be usedin other 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. Manufactur
5、ers or suppli-ers should be contacted before design development or antici-pated procurement.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard. No other units of measurement areincluded in this standard.NOTE 1A complete metric companion to Specification F3042 will bedevelop
6、edF3042M; therefore, no metric equivalents are shown in thisspecification.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, health, and environmental practic
7、es and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and R
8、ecom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2B154 Test Method for Mercurous Nitrate Test for CopperAlloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Dig
9、its in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes (Withdrawn 2002)3E55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determinatio
10、n of Chemical CompositionE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (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 (Withdr
11、awn 2003)3E120 Test Methods for Chemical Analysis of Titanium andTitanium Alloys (Withdrawn 2003)3E165 Practice for Liquid Penetrant Examination for GeneralIndustryE350 Test Methods for Chemical Analysis of Carbon Steel,Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, andWrought IronE354 Test
12、Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron,Nickel, and Cobalt AlloysE384 Test Method for Microindentation Hardness of Mate-rialsE478 Test Methods for Chemical Analysis of Copper Alloys1This test method is under the jurisdiction of ASTM Committee F
13、16 onFasteners and is the direct responsibility of Subcommittee F16.04 on NonferrousFasteners.Current edition approved Sept. 1, 2018. Published September 2018. Originallyapproved in 2013. Last previous edition approved in 2013 as E304213. DOI:10.1520/F3042-13.2For referenced ASTM standards, visit th
14、e ASTM website, www.astm.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.Copyright ASTM In
15、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standard
16、s, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1E1409 Test Method for Determination of Oxygen and Nitro-gen in Titanium and Titanium Alloys by Inert Gas FusionF788/F788M Specification for Surface Discontinuities ofBolts, Screws, and S
17、tuds, 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)ASME B18.6.2
18、 Slotted Head Cap Screws, Square Head SetScrews, and Slotted 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 HigherJ26
19、56 Fastener Part StandardHexagon Socket, SquareHead, and Slotted Headless Set ScrewsInch Dimen-sioned2.4 Federal Standards and Specifications:6QQ-N-286 Nickel-Copper-Aluminum Alloy, Wrought (UNSN05500)3. Classification3.1 The designation of the alloys of this specification shallbe consistent with th
20、e nonferrous designations in Table 1.4. Ordering Information4.1 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,
21、including nominal thread designation,thread pitch and fit, 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 ti
22、tanium is not to be coated;4.1.7 Black oxide coating, if required (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 (
23、see Supplementary Requirements); and4.1.12 ASTM International 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 materia
24、lhaving a chemical composition conforming to the requirementsin 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 su
25、chthat the finished products conform to all of the specifiedrequirements.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 condi
26、tions:Alloy ConditionCopper (all alloys) As formed or stress 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 shal
27、lbe specified by the purchaser for nickel alloys 400 and 405 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 specif
28、ied in Table 1.6.2 Manufacturers AnalysisWhen test reports 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.
29、3.2.Alternatively, if heat and lot identities have been maintained,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
30、each lot. The chemical compo-sition thus determined shall conform 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 b
31、e met asdetermined using Test Methods E18.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.5Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,PA 15096-0001, http:/www.sae
32、.org.6Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,Philadelphia, PA 19111-5094, http:/quicksearch.dla.mil.F3042 13 (2018)2TABLE 1 Chemical RequirementsComposition, %UNSDesig-nationNumberCopper and Copper-Base AlloysAlloyGeneralNameAluminumCopper,minIron,maxManganese,maxNickel
33、,maxPhos-phorusSiliconZinc,maxALead,maxTinArsenic,maxC26000 260 brass . . . 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 . .
34、 . . . .C46200 462 navalbrass. . . 62.0-65.00.10 . . . . . . . . . . . . balance 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
35、-8.0 88.0C1.5-3.5 1.0 . . . . . . .C63000 630 aluminumbronze9.0-11.0 78.0C2.0-4.0 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
36、.25max94.0C0.25 1.5 . . . . . . 2.8-3.5 1.5 0.20-0.8 . . . . . .Nickel and 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
37、Ni-CuClassA. 0.3 . bal-ance2.5 2.0 63.0-70.0. 0.5 .E. 0.024 . .N04405 405 Ni-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.
38、0min0.015 0.50max0.40max1.00max8.0-10.00.015 . . . 3.2-4.2N06686 686 Ni-Cr-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,TiHydr
39、o-gen,HNitro-gen,NOxy-gen,OPalla-dium,PdVana-dium,VChro-mium,CrMolyb-denum,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-
40、4VELI5.5-6.50.08 0.25 bal-ance0.0125 0.05 0.13 . . . 3.5-4.5. . . . . . 0.1 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
41、 nickel.CMinimum content of copper plus all other elements with specified limits 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 ele
42、ctroslag remelting process (ESR) or the vacuum arc remelting process (VAR).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
43、need notbe reported unless a report is specifically required by the purchaser.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
44、 13 (2018)38. Dimensions8.1 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 spec
45、ified by thepurchaser, socket 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, irregularsurfaces, and oth
46、er imperfections affecting serviceability. Un-less otherwise 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
47、 fasteners shall be furnished without anadditive chemical 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
48、pur-chaser.9.2.2 Black oxide coating (BOC), if specified, 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 discontinui
49、ties forthese products shall conform to Specification 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, themaximum 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 re
