1、Designation:A39408(Reapproved 2015)Standard Specification forSteel Transmission Tower Bolts,Zinc-Coated and Bare1This standard is issued under the fixed designation A394;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t 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 chemical a
3、nd mechanicalrequirements of hexagon and square-head zinc-coated steelbolts and atmospheric corrosion-resistant bolts,in nominalthread diameters of12,58,34,78and 1 in.for use in theconstruction of transmission towers,substations,and similarsteel structures.The various types of bolts covered in thiss
4、pecification are:1.1.1 Type 0Hot-dip zinc-coated bolts made of low ormedium carbon steel.1.1.2 Type 1Hot-dip zinc-coated bolts made of mediumcarbon steel,quenched and tempered.1.1.3 Type 2Withdrawn in 2005.1.1.4 Type 3Bare(uncoated),quenched and temperedbolts made of weathering steel.1.2 Annex A1 of
5、 this specification covers hot-dip zinc-coated steel ladder bolts,step bolts,and support-equipmentbolts.1.3 Nuts and washers that are supplied under this specifica-tion that are hot-dip zinc coated shall be in accordance with4.4.1.4 Terms used in this specification are defined in Termi-nology F1789.
6、1.5 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.6 The following safety hazards caveat pertains only to thetest methods portion,Section 11,of this specification.Thisstandard does not purport to address all of the saf
7、ety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2A563 Specification for Carbon and All
8、oy Steel NutsD3951 Practice for Commercial PackagingF436 Specification for Hardened Steel WashersF606/F606M Test Methods for Determining the MechanicalPropertiesofExternallyandInternally ThreadedFasteners,Washers,Direct Tension Indicators,and RivetsF788/F788M Specification for Surface Discontinuitie
9、s ofBolts,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1789 Terminology for F16 Mechanical FastenersF2329 Specification for Zinc Coating,Hot-Dip,Require-ments for Application to Carbon and Alloy Steel Bolt
10、s,Screws,Washers,Nuts,and Special Threaded FastenersG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels2.2 ASME Standards:3B1.1 Unified Screw ThreadsB18.2.1 Square and Hex Bolts and ScrewsB18.24 Part Identifying Number(PIN)Code System Stan-dard for B18 Fastener Produc
11、ts3.Ordering Information3.1 Orders for products under this specification shall includethe following:3.1.1 Quantity(number of bolts and accessories).3.1.2 Name of products,including accessories such as A563nuts and F436 washers when desired.3.1.3 Dimensions,including nominal bolt diameter andlength.F
12、or bolts other than transmission-tower bolts,completedimensions are required(see Annex A1).3.1.4 Type of bolt(for example,Type 0,1,or 3).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
13、and Washers.Current edition approved June 15,2015.Published June 2015.Originallyapproved in 1955.Last previous edition approved in 2008 as A394 081.DOI:10.1520/A0394-08R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual
14、 Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American 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
15、 end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.4.1 When non-zinc-coated atmospheric corrosion-resistant steel is required,Type 3 bolts shall be specified by thepurchaser.3.1.5 ASTM designation and year of issue.W
16、hen year ofissue is not specified,bolts shall be furnished to the latest issue.3.1.6 Additional requirements,if any,are to be specified onthe purchase order:3.1.6.1 Shear-strength testing(see 6.2.1 and 6.2.2).Includetype of test required.3.1.6.2 Additional tests.3.1.6.3 Inspection(see 12.1 and 12.2).3.1.6.4 Certification(see 14.1).3.1.6.5 Test reports(see 14.1).3.1.6.6 Other finishes,specify other protective finish,ifrequired.NOTE1Examples of ordering description:(1)1000 square-head transmission
