ASTM_A_563_-_15.pdf

Designation:A56315Standard Specification forCarbon and Alloy Steel Nuts1This standard is issued under the fixed designation A563;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 specification2covers chemical and mechanicalrequirements for eight grades of carbon and alloy steel nuts forgeneral structural and mechanical uses on bolts,studs,andother externally threaded parts.NOTE1See Appendix X1 for guidance on suitable application of nutgrades.1.2 The requirements for any grade of nut may,at thesuppliers option,and with notice to the purchaser,be fulfilledby furnishing nuts of one of the stronger grades specifiedherein unless such substitution is barred in the inquiry andpurchase order.1.3 Grades C3 and DH3 nuts have atmospheric corrosionresistance and weathering characteristics comparable to that ofthe steels covered in Specifications A242/A242M,A588/A588M,and A709/A709M.The atmospheric corrosion resis-tance of these steels is substantially better than that of carbonsteel with or without copper addition(see 5.2).When properlyexposed to the atmosphere,these steels can be used bare(uncoated)for many applications.NOTE2Acomplete metric companion to Specification A563 has beendevelopedA563M;therefore,no metric equivalents are presented in thisspecification.1.4 Terms used in this specification are defined in Termi-nology F1789 unless otherwise defined herein.2.Referenced Documents2.1 ASTM Standards:3A194/A194M Specification for Carbon Steel,Alloy Steel,and Stainless Steel Nuts for Bolts for High Pressure orHigh Temperature Service,or BothA242/A242M Specification for High-Strength Low-AlloyStructural SteelA307 Specification for Carbon Steel Bolts,Studs,andThreaded Rod 60 000 PSI Tensile StrengthA325 Specification for Structural Bolts,Steel,Heat Treated,120/105 ksi Minimum Tensile StrengthA354 Specification for Quenched and Tempered Alloy SteelBolts,Studs,and Other Externally Threaded FastenersA394 Specification for Steel Transmission Tower Bolts,Zinc-Coated and BareA449 Specification for Hex Cap Screws,Bolts and Studs,Steel,Heat Treated,120/105/90 ksi Minimum TensileStrength,General UseA490 Specification for Structural Bolts,Alloy Steel,HeatTreated,150 ksi Minimum Tensile StrengthA563M Specification for Carbon andAlloy Steel Nuts(Met-ric)A588/A588M Specification for High-Strength Low-AlloyStructural Steel,up to 50 ksi 345 MPa Minimum YieldPoint,with Atmospheric Corrosion ResistanceA687 Specification for High-Strength Nonheaded SteelBolts and Studs(Withdrawn 1999)4A709/A709M Specification for Structural Steel for BridgesA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelD3951 Practice for Commercial PackagingF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,and Rivets(Metric)F0606_F0606MF812/F812M Specification for Surface Discontinuities ofNuts,Inch and Metric SeriesF1789 Terminology for F16 Mechanical FastenersF2329 Specification for Zinc Coating,Hot-Dip,Require-ments for Application to Carbon and Alloy Steel Bolts,Screws,Washers,Nuts,and Special Threaded FastenersG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels1This 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 May 1,2015.Published July 2015.Originally approvedin 1966.Last previous edition approved in 2014 as A563 07a(2014).DOI:10.1520/A0563-15.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA 563 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.4The last approved version of this historical standard is referenced onwww.astm.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 2.2 ANSI Standards:ANSI B1.1 Unified Screw Threads5ANSI B18.2.2 Square and Hex Nuts53.Ordering Information3.1 Orders for nuts under this specification shall include thefollowing:3.1.1 Quantity(number of nuts),3.1.2 Nominal size and thread series of nuts,3.1.3 Style of nut(for example,heavy hex),3.1.4 Grade of nut,3.1.5 Zinc CoatingSpecify the zinc-coating processrequired,for example,hot-dip,mechanically deposited,or nopreference(