ASTM_A_194_-_A_194M_-_17.pdf

Designation:A194/A194M17Endorsed byManufacturers Standardization Societyof the Valve and Fittings IndustryUsed in USNRC-RDT StandardsStandard Specification forCarbon Steel,Alloy Steel,and Stainless Steel Nuts for Boltsfor High Pressure or High Temperature Service,or Both1This standard is issued under the fixed designation A194/A194M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript 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 specification2covers a variety of carbon,alloy,andmartensitic stainless steel nuts in the size range14through 4 in.and metric M6 through M100 nominal.It also covers austeniticstainless steel nuts in the size range14in.and M6 nominal andabove.These nuts are intended for high-pressure or high-temperature service,or both.Grade substitutions without thepurchasers permission are not allowed.1.2 Bars from which the nuts are made shall be hot-wrought.The material may be further processed by centerless grindingor by cold drawing.Austenitic stainless steel may be solutionannealed or annealed and strain-hardened.When annealed andstrain hardened austenitic stainless steel is ordered in accor-dance with Supplementary Requirement S1,the purchasershould take special care to ensure that 8.2.2,SupplementaryRequirement S1,and Appendix X1 are thoroughly understood.1.3 Supplementary requirements of an optional nature areprovided.These shall apply only when specified in the inquiry,contract,and order.1.4 This specification is expressed in both inch-pound unitsand in SI units.However,unless the order specifies theapplicable“M”specification designation(SI units),the mate-rial shall be furnished to inch-pound units.1.5 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.Within the text,the SI units are shown inbrackets.1.6 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 Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3A153/A153M Specification for Zinc Coating(Hot-Dip)onIron and Steel HardwareA276/A276M Specification for Stainless Steel Bars andShapesA320/A320M Specification for Alloy-Steel and StainlessSteel Bolting for Low-Temperature ServiceA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA962/A962M Specification for Common Requirements forBolting Intended for Use at Any Temperature from Cryo-genic to the Creep RangeB633 Specification for Electrodeposited Coatings of Zinc onIron and SteelB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelB696 Specification for Coatings of Cadmium MechanicallyDepositedB766 Specification for Electrodeposited Coatings of Cad-miumE112 Test Methods for Determining Average Grain SizeE566 Practice for Electromagnetic(Eddy Current)Sorting ofFerrous MetalsF606/F606M Test Methods for Determining the MechanicalPropertiesofExternallyandInternally ThreadedFasteners,Washers,Direct Tension Indicators,and Rivets1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved March 15,2017.Published April 2017.Originallyapproved in 1936.Last previous edition approved in 2016 as A194/A194M 16a.DOI:10.1520/A0194_A0194M-17.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-194 in Section II of that code.3For 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.*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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 F1940 Test Method for Process Control Verific