ASTM_F_880M_-_16.pdf

Designation:F880M16Standard Specification forStainless Steel Socket Set Screws(Metric)1This standard is issued under the fixed designation F880M;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.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 for austeniticgrade stainless steel socket set screws(SSS),sizes M1.6through M24,having Property Classes A1-50 and A1-70.1.2 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.NOTE1This specification is the metric companion of SpecificationF880.1.3 The following hazard caveat pertains only to Section 11,the Test Method Section:This standard does not purport toaddress the safety problems 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 Documents2.1 ASTM Standards: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 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 PackagingE3 Guide for Preparation of Metallographic SpecimensE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE92 Test Methods for Vickers Hardness and Knoop Hard-ness of Metallic MaterialsE384 Test Method for Microindentation Hardness of Mate-rialsF738M Specification for Stainless Steel Metric Bolts,Screws,and Studs(Withdrawn 2014)3F788 Specification for Surface Discontinuities of Bolts,Screws,and Studs,Inch and Metric SeriesF880 Specification for Stainless Steel Socket,Square Head,and Slotted Headless-Set ScrewsF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ISO Standards:4ISO 4026 Hexagon socket set screws with flat pointISO 4027 Hexagon socket set screws with cone pointISO 4028 Hexagon socket set screws with dog pointISO 4029 Hexagon socket set screws with cup point3.Classification3.1 The designation of the property class for the twomaterials and conditions of this specification shall be consistentwith the stainless steel designations in Specification F738M.3.2 The austenitic stainless steel socket set screw shall bedesignation F880MA150 or F880M A170.4.Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity(number of screws);4.1.2 Dimensions,including nominal thread designation,thread pitch,nominal screw length(millimetres)and pointconfiguration.A standard part number may be used for thisdefinition;4.1.3 Name of the screw(SSS);4.1.4 Property Class A1-50 or A1-70;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 May 1,2016.Published July 2016.Originally approvedin 1984.Last previous edition approved in 2015 as F880M 02(2015).DOI:10.1520/F0880M-16.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from International Organization for Standardization(ISO),ISOCentral Secretariat,BIBC II,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,http:/www.iso.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 Coating,if required.If a finish other than passivationis required,it must be specified on the order or productstandard;4.1.6 ASTM designation and year of issue;and4.1.7 Any special or supplemental requirements.4.2 Example50 000 pieces M6 1 8 cone point SSSA1-70 ASTM F880M 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 alloy Class A1-50 screwsshall be annealed by heating to 1040 6 30C to obtainmaximum corrosion resistance and minimum permeability.The screws shall be held for a suffi