ASTM_F_2403_-_09.pdf

Designation:F240309Standard Specification forInch Series Machine Screws,Carbon Steel,60 000 psiTensile Strength1This standard is issued under the fixed designation F2403;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers the requirements for non-heattreated carbon steel machine screws with nominal diameters ofNo.0000 through34in.having a minimum ultimate tensilestrength of 60 000 psi.1.2 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.2.Referenced Documents2.1 ASTM Standards:2A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsF606/F606M Test Methods for Determining the MechanicalPropertiesofExternallyandInternally ThreadedFasteners,Washers,Direct Tension Indicators,and RivetsF788/F788M Specification for Surface Discontinuities ofBolts,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1941 Specification for Electrodeposited Coatings onThreaded Fasteners(Unified Inch Screw Threads(UN/UNR)F2282 Specification for QualityAssurance Requirements forCarbon and Alloy Steel Wire,Rods,and Bars for Me-chanical Fasteners2.2 ASME Standards:3B1.1 Unified Screw ThreadsB1.3M Screw Thread Gauging Systems Dimensional Ac-ceptability Inch and Metric Screw ThreadsUN UNRUNJ M MJB18.6.3 Machine Screws and Machine Screw NutsB18.24 Part Identifying Number(PIN)Code System Stan-dard for B18 Externally Threaded Fastener ProductsB18.6.4 Thread Forming and Thread Cutting TappingScrews and Metallic Drive ScrewsB18.18.2M Inspection and Quality Assurance for High-Volume Machine Assembly Fasteners2.3 Industrial Fasteners Institute:4IFI138 Straightness Gaging Method and Straightness Lim-its for Machine,Tapping,and Thread Rolling Screws2.4 ISO Standards:5ISO 3269:2000 FastenersAcceptance Inspection2.5 National Aerospace Standards:6NASM 1312-8 Fastener Test Methods,Method 8,TensileStrength3.Ordering Information3.1 Orders for machine screws under this specification shallinclude the following(see Note 1):3.1.1 ASTM specification number and date of issue,3.1.2 Quantity(number of pieces),3.1.3 Head style and drive(ASME B18.6.3),3.1.4 Size(nominal diameter,threads per inch and length)(see 7.3),and3.1.5 Stress relieve anneal,if required(see 4.2).3.1.6 FinishSpecify protective finish type,if required.Ifrequired,specify applicable coating specification,thickness,and type.3.1.7 Certification,if required(Section 11).3.1.8 Supplementary requirements,if required.3.1.9 Other special requirements,if required.3.1.10 Part Identifying Numbering(PIN)System(optional)Part Identifying Number will be determined in accordancewith ASME B18.24,if required.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 May 1,2009.Published May 2009.Originallyapproved in 2005.Last previous edition approved in 2006 as F2403 06.DOI:10.1520/F2403-09.2For 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 to the standards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.org.4Available from Industrial Fasteners Institute(IFI),6363 Oak Tree BoulevardIndependence,Ohio 44131,www.industrial-fasteners.org.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.6Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 NOTE1A typical order description follows:ASTM F XXXX XX,5000 pieces;Machine Screws:Type I Cross Recessed Flat CountersunkHead;1420 3 UNC-2A;Certifications Required.4.Materials and Manufacture4.1 Materials:4.1.1 Steel for machine screws shall be made by theopen-hearth,basic-oxygen,or electric-furnace process.4.1.2 Unless otherwise specified,Specification F2282 shallbe used for procurement control of the material used tomanufacture machine screws,except chemical compositionshall be as specified in Section 5.4.2 Manufacture:4.2.1 Unless otherwise specified,the method of manufac-ture shall be cold forming.4.2.2 Machine screw threads shall be rolled.4.2.3 When specified by the purchaser,machine screwsshall