1、Designation:F288212Standard Specification forScrews,Alloy Steel,Heat Treated,170 ksi Minimum TensileStrength1This standard is issued under the fixed designation F2882;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last r
2、evision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for quenchedand tempered alloy steel screws 0.060 through 112inches indiameter having
3、a minimum ultimate tensile strength of 170KSI.NOTE1This specification is the inch companion of SpecificationF2882M.1.2 The following hazard caveat pertains only to the testmethod portion,Section 10,of this specification:This standarddoes not purport to address all of the safety concerns,if any,assoc
4、iated 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 ASTM Standards:2A751 Test Methods,Practices,and Terminology for Chemi-cal Analys
5、is of Steel ProductsE112 Test Methods for Determining Average Grain SizeF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,Direct Tension Indicators,and RivetsF788/F788M Specification for Surface Discontinuities ofBolts,Screws,and Stu
6、ds,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1940 Test Method for Process Control Verification toPrevent Hydrogen Embrittlement in Plated or CoatedFastenersF2282 Specification for QualityAssurance Requirements forCarbon
7、 and Alloy Steel Wire,Rods,and Bars for Me-chanical FastenersF2328 Test Method for Determining Decarburization andCarburization in Hardened and Tempered Threaded SteelBolts,Screws and Studs2.2 ASME Standards:3B18.2.1 Square and Hex Bolts and ScrewsB18.2.5 12 Point Flange ScrewsB18.3 Socket Cap,Shoul
8、der,and Set Screws,Hex andSpline Keys(Inch Series)B18.24 Part Identifying Number(PIN)Code System Stan-dard for B18 Fastener Products3.Ordering Information3.1 Orders for high strength screws under this specificationshall include the following information:3.1.1 Quantity(number of screws),3.1.2 Nominal
9、 dimensions,including diameter,threaddesignation,thread,pitch,and nominal screw length,3.1.3 Name of the screw including specification,3.1.3.1 ASME B18.2.1,Square and Hex Bolts and Screws,3.1.3.2 ASME B18.2.5,12 Point Flange Screws,3.1.3.3 ASME B18.3,Socket Cap,Shoulder,and SetScrews,Hex and Spline
10、Keys(Inch Series),3.1.4 ASTM designation and year of issue.3.2 Orders for high strength screws may include the follow-ing optional requirements:3.2.1 Inspection at point of manufacture.3.2.2 Coating,if required(see 4.6).3.2.3 Additional Testing(see 11.1).3.2.4 Special Packaging(see 14.1.2).3.2.5 Sup
11、plementary Requirement(see S1).3.2.6 Special Requirements.3.2.7 For establishment of a part identifying system,seeASME B18.24.4.Materials and Manufacture4.1 The screws shall be fabricated from steel made to finegrain practice and shall have an austenitic grain size of 5 orfiner.In the event of contr
12、oversy over grain size,referee testson finished screws conducted in accordance with Test MethodsE112 shall prevail.1This test method 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 edit
13、ion approved Oct.1,2012.Published November 2012.DOI:10.1520/F2882-12.2For 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 websi
14、te.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 High strength screws shall be heat treated by quen
15、chingin oil from above the transformation temperature and thentempered by reheating to at least 797F to within the hardnessrange specified in Table 1.4.2.1 The minimum tempering temperature may be verifiedby submitting screws to 777F for 30 min at temperature.Themean cross-section hardness of three
16、readings on the screwbefore and after retempering shall not differ by more than 2points HRC.4.3 Re-heat-treatment of screws for the purpose of carbonrestoration is not permitted except for set screws.4.4 Unless otherwise specified,threads of screws shall berolled for diameters through 0.625 in.and for screw lengthsthrough 1.5 in.For diameters and lengths other than this,threads may be rolled,cut,or ground with the exception ofsocket set screws.Set screws with thread diameters up to andincluding#