ASTM_D_5648_-_01_2014.pdf

Designation:D564801(Reapproved 2014)Standard Test Method forTorque-Tension Relationship of Adhesives Used onThreaded Fasteners(Lubricity)1This standard is issued under the fixed designation D5648;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.1.Scope1.1 This test method covers the determination of the torque-tension relationship(lubricity)of adhesives used for lockingand sealing threaded fasteners.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 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 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D907 Terminology of Adhesives2.2 Society of Automotive Engineers Standards:SAE J174 Torque Tension Test Procedure for Steel ThreadedFasteners3SAE J429 Mechanical and Material Requirements for Exter-nally Threaded Fasteners32.3 Federal Specification:FF-N-836Nut:Square,Hexagon,Cap,Slotted,Castle,Knurled,Welding and Single Ball Seat43.Terminology3.1 DefinitionsMany of the terms in this test method aredefined in Terminology D907.4.Summary of Test Method4.1 This test method consists of applying adhesive to athreaded fastener and measuring the developed tension appliedto the fastener at specified torques.Alternatively,the torquerequired to reach specified levels of bolt tension may bemeasured.5.Significance and Use5.1 On some applications of threaded fasteners,it is desir-able to control either the amount of developed tension when aspecified range of torque has been applied or the torquerequired to develop a specified range of tension.This testmethod is used to determine the effect of using adhesives onthe torque-tension relationship of threaded fasteners.5.2 Accurate torque-tension relationships may be measuredonly by defining and controlling the many related test param-eters.6.Apparatus6.1 Tension-Measuring Device,capable of measuring theaxial tension induced in the bolt as it is tightened,having anaccuracy within 65%of the test load.6.2 Torque-Measuring Device,of suitable capacity havingan accuracy within 65%of a given torque reading.7.Test Specimens7.1 BoltsAs-received,phosphate-and-oil-treated,38-in.size,16 threads per inch,Unified National Coarse thread series(38by 16 UNC),Grade 5 bolts in accordance with SAE J429,having a minimum length of 112in.(38.1 mm)with hexagonalhead.7.2 Steel NutsAs-received,Type II,Style 4,nominally2164in.(8.3 mm)thick,conforming to Fed.Spec.FF-N-836.NOTE1Other fastener sizes and substrates may be used uponagreement between the supplier and the user of adhesives.7.3 Hardened Washers,conforming to the dimensional,metallurgical,mechanical,and finish requirements given inTable 1 of SAE J174.8.Procedure8.1 Determine the torque-tension relationship on not lessthan five specimens as follows:1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.60 on AdhesiveMaterial Classification System.Current edition approved March 1,2014.Published March 2014.Originallyapproved in 1994.Last previous edition approved in 2008 as D5648 01(2008).DOI:10.1520/D5648-01R14.2For 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 Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001,http:/www.sae.org.4Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.1.1 For liquid adhesives,insert the bolt in the tension-measuring device and apply the adhesive to the exposedthreads of the bolt.Also apply the adhesive to the threads of thenut.8.1.2 Place a new hardened washer over the exposed end ofthe bolt until it squarely contacts the bearing surface of thedevice.8.1.3 Assemble the nut onto the bolt by hand until itcontacts the hardened washer.8.1.4 Using the torque-measuring device,tighten the nutcontinuously and uniformly at a speed not to exceed 30 r/min,making sure that the washer and the bolt are restrained fromturning.8.1.5 When testing specimens in accordance with 7.1 and7.2,record bolt tensions,not exceeding 75%of the proof load,at 10,20,30,and 40-ft