1、Designation:F88012Standard Specification forStainless Steel Socket,Square Head,and Slotted Headless-Set Screws1This standard is issued under the fixed designation F880;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last
2、revision.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 requirements f
3、or austeniticgrade stainless steel socket-set screws(SSS)sizes 0.060through 1.000 in.square head set screws(SHSS)sizes 0.190through 1.500 in.,and slotted headless set screws(HSS)0.060through 0.750 in.,in two conditions,AF and CW.1.2 UnitsThe values stated in inch-pound units are to beregarded as sta
4、ndard.No other units of measurement areincluded in this standard.NOTE1A complete metric companion to Specification F880 has beendevelopedF880M;therefore,no metric equivalents are shown in thisspecification.1.3 The following hazards caveat pertains only to TestMethod Section,Section 12 of this specif
5、ication.This standarddoes not purport to address(all of)the safety problemsassociated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1
6、ASTM Standards:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA342/A342M Test Methods for Permeability of WeaklyMagnetic MaterialsA380 Practice for Cleaning,Descaling,and Passivation ofStainless Steel Parts,Equipment,and SystemsA555/A555M Specificat
7、ion for General Requirements forStainless Steel Wire and Wire RodsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA967 Specification for Chemical Passivation Treatments forStainless Steel PartsD3951 Practice for Commercial PackagingE18 Test Methods for Rockwell Ha
8、rdness of Metallic Ma-terialsF593 Specification for Stainless Steel Bolts,Hex CapScrews,and StudsF788/F788M Specification for Surface Discontinuities ofBolts,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2
9、 ASME Standard:3B 18.3 Socket Cap,Shoulder and Set Screws,Inch SeriesB 18.6.2 Slotted Head Cap Screws,Square Head Set Screws,and Slotted Headless Set Screws(Inch Series)3.Classification3.1 The designation of the alloy group and condition for thetwo materials and conditions of this specification shal
10、l beconsistent with the stainless steel designations in SpecificationF593.3.2 The austenitic stainless steel socket set screw shall bedesignated F880 Group 1 Condition AF(solution annealed)orF880 Group 1 Condition CW(cold worked).4.Ordering Information4.1 Orders for material under this specification
11、 shall includethe following information:4.1.1 Quantity(number of screws);4.1.2 Dimensions,including nominal thread designation,thread pitch,nominal screw length(inches)and point configu-ration.A standard part number may be used for this definition;4.1.3 Name of the screw(SSS,SHSS or HSS);4.1.4 Condi
12、tion AF/CW;1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.04 on NonferrousFasteners.Current edition approved June 1,2012.Published November 2012.Originallyapproved in 1986.Last previous edition approved in 2002 as
13、F880-02(2008)1.DOI:10.1520/F0880-02R08.2For 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 Na
14、tional Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*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 4.1.5 Surface finish,if require
15、d.If a finish other thanpassivation is required,it must be specified on the order orproduct standard;4.1.6 ASTM specification and year of issue;and4.1.7 Any special or supplemental requirements.4.1.8 If torque testing is required for socket set screws sizesover12inch.4.2 Example50 000 pieces 0.250-2
16、0 0.375 cone pointSSS CW ASTM F880 XX.5.Materials and Manufacture5.1 The screw may be forged,formed,extruded,machined,or ground to meet the dimensional characteristics and perfor-mance requirements.5.2 Heat TreatmentAustenitic alloys Group 1 ConditionAF screw shall be annealed by heating to 1900 6 50F toobtain maximum corrosion resistance and minimum perme-ability.The screws shall be held for a sufficient time attemperature,then cooled at a rate sufficient to prevent precipi-tation of the carbid
