1、Designation:F87915Standard Specification forStainless Steel Socket Button and Flat Countersunk HeadCap Screws1This standard is issued under the fixed designation F879;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last r
2、evision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers the chemical and me
3、chanicalrequirements for stainless steel inch hexagon socket button(SBHCS)and flat countersunk(SFHCS)head cap screws withnominal thread 0.060 through 0.625 in.intended for use inapplications requiring general corrosion resistance.1.2 Two groups of austenitic stainless steel alloys and threecondition
4、s are covered.See Table 1 and Table 2.1.3 UnitsThe values stated in inch-pound units are to beregarded as standard.No other units of measurement areincluded in this standard.1.4 The following precautionary caveat pertains only to thetest method portion,Section 12,of this specification:Thisstandard d
5、oes not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standar
6、ds:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA342/A342M Test Methods for Permeability of WeaklyMagnetic MaterialsA380/A380M Practice for Cleaning,Descaling,and Passi-vation of Stainless Steel Parts,Equipment,and SystemsA555/A555M Specification
7、for General Requirements forStainless Steel Wire and Wire RodsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA967/A967M Specification for Chemical Passivation Treat-ments for Stainless Steel PartsD3951 Practice for Commercial PackagingE18 Test Methods for Rockwel
8、l Hardness of Metallic Ma-terialsE92 Test Method for Vickers Hardness of Metallic Materials(Withdrawn 2010)3E384 Test Method for Knoop and Vickers Hardness ofMaterialsF593 Specification for Stainless Steel Bolts,Hex CapScrews,and StudsF606/F606M Test Methods for Determining the MechanicalPropertieso
9、fExternallyandInternally ThreadedFasteners,Washers,Direct Tension Indicators,and RivetsF788 Specification for Surface Discontinuities of Bolts,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ASME Standard:
10、B 18.3 Socket Cap,Shoulder and Set Screws(Inch Series)42.3 JIS Standard:5JIS G 4309 Stainless Steel Wires3.Classification3.1 The designation of the alloy group and condition of thisspecification shall be consistent with the stainless steel desig-nations in Specification F593.3.2 Screws shall be desi
11、gnated by group and condition(forexample,F879 Group 1 Condition AF).4.Ordering Information4.1 Orders for material under this specification shall includethe following information:1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcom
12、mittee F16.04 on NonferrousFasteners.Current edition approved May 1,2015.Published July 2015.Originally approvedin 1986.Last previous edition approved in 2012 as F879-12.DOI:10.1520/F0879-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at service
13、astm.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 Mechanical Engineers(ASME),ASMEInternational Headquarte
14、rs,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.org.5Available from Japanese Industrial Standards Committee(JIS)1-3-1Kasumigaseki,Chiyoda-ku,Tokyo 100-8901,JAPAN.http:/www.jisc.go.jp*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor D
15、rive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.1.1 Quantity(number of pieces of each item).4.1.2 Name of the screw,SBHCS or SFHCS.4.1.3 Dimensions,including nominal thread designation,thread pitch,and nominal screw length(inches).A standardpart number may be used for this definiti
16、on.4.1.4 Alloy group and condition.4.1.5 Certification,if required(see Section 15).4.1.6 ASTM specification and year of issue.4.1.7 Any special or supplemental requirements(seeSupplementary Requirements S1 through S6).5.Materials and Manufacture5.1 Screws shall be formed by upsetting or extruding,orboth.5.2 Screws shall be roll threaded.5.3 Heat TreatmentAustenitic alloys Condition AFscrews,following manufacture,shall be annealed by heating to1900 6 50F to obtain maximum corrosion resistance and
