1、Designation:A57417Standard Specification forAlloy Steel Socket-Head Cap Screws1This standard is issued under the fixed designation A574;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
2、 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 quenchedand tempered alloy
3、steel hexagon socket-head cap screws,0.060 through 4 in.in diameter where high strength is required.1.2 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.3 The following hazard caveat pertains only to the testmethod porti
4、ons,sections 5.1,5.6,8,and 12,of this specifi-cation.This standard does not purport to address all of thesafety concerns,if any,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 regul
5、atory limitations prior to use.1.4 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 Org
6、anization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsE112 Test Methods for Determining Average Grain SizeF606/F606M Test Methods for Determining the MechanicalPropertiesofExter
7、nallyandInternally 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 InspectionF1789 Terminology for F1
8、6 Mechanical FastenersF1940 Test Method for Process Control Verification toPrevent Hydrogen Embrittlement in Plated or CoatedFastenersF2282 Specification for QualityAssurance Requirements forCarbon and Alloy Steel Wire,Rods,and Bars for Me-chanical FastenersF2328 Test Method for Determining Decarbur
9、ization andCarburization in Hardened and Tempered Threaded SteelBolts,Screws,Studs,and Nuts2.2 ASME Standards:3B18.3 Socket Cap,Shoulder,and Set ScrewsB18.12 Glossary of Terms for Mechanical FastenersB18.24 Part Identifying Number(PIN)Code System Stan-dard for B18 Fastener Products3.Terminology3.1 D
10、efinitions of Terms Specific to This StandardThedefinition of terms used in this specification shall be asspecified in Terminology F1789,ASME B18.12,or the appli-cable referenced standards,unless otherwise defined herein.Inthe event that there are differences for a given term,ASTMdefinitions shall b
11、e used.4.Ordering Information4.1 Orders for socket head cap screws under this specifica-tion shall include the following information:4.1.1 ASTM designation and year of issue.4.1.2 Name of the screw(SHCS).4.1.3 Quantity(number of pieces by size).4.1.4 Dimensions,including nominal thread designation,t
12、hread pitch,and nominal screw length.4.2 Orders for socket head cap screws shall include thefollowing optional requirements if specified by the purchaser:4.2.1 Inspection at point of manufacture.4.2.2 Coating,if a protective finish other than those,whichare described in 5.5 is required,it must be sp
13、ecified(see 5.6).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 June 1,2017.Published June 2017.Originallyapproved in 1967.Last previous edition ap
14、proved in 2016 as A574 16.DOI:10.1520/A0574-17.2For 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 Ame
15、rican Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.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 St
16、atesThis 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 4.2.3 Test reports or certificate of conformance,as required(see Section 15).4.2.4 Additional testing(see 12.1).4.2.5 Special packaging(see 18.1.2).4.2.6 Supplementary requirements
