1、Designation: D 5648 01Standard Test Method forTorque-Tension Relationship of Adhesives Used onThreaded Fasteners (Lubricity)1This standard is issued under the fixed designation D 5648; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 u
3、sed for lockingand sealing threaded fasteners.1.2 The values stated in inch-pounds are to be regarded asthe standard. The values given in parentheses are for informa-tion only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsib
4、ility 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:2D 907 Terminology of Adhesives2.2 Society of Automotive Engineers Standards:SAE J174 Torque Tens
5、ion Test Procedure for SteelThreaded Fasteners3SAE J429 Mechanical and Material Requirements for Ex-ternally Threaded Fasteners32.3 Federal Specification:FF-N-836 Nut: Square, Hexagon, Cap, Slotted, Castle,Knurled, Welding and Single Ball Seat43. Terminology3.1 DefinitionsMany of the terms in this t
6、est method aredefined in Terminology D 907.4. 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 ma
7、y 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
8、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
9、 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 Co
10、arse thread series(38 by 16 UNC), Grade 5 bolts in accordance with SAE J429,having a minimum length of 112 in. (38.1 mm) with hexagonalhead.7.2 Steel NutsAs-received, Type II, Style 4, nominally2164 in. (8.3 mm) thick, conforming to Fed. Spec. FF-N-836.NOTE 1Other fastener sizes and substrates may b
11、e used upon agree-ment between the supplier and the user of adhesives.7.3 Hardened Washers, conforming to the dimensional,metallurgical, mechanical, and finish requirements given inTable Number 1 of SAE J174.1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the dir
12、ect responsibility of Subcommittee D14.60 on AdhesiveMaterial Classification SystemCurrent edition approved March 10, 2001. Published May 2001. Originallypublished as D 5648 - 94. Last previous edition D 5648 - 94.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM C
13、ustomer 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. Gover
14、nment Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8. Procedure8.1 Determine the torque-tension rel
15、ationship on not lessthan five specimens as follows: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
16、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
17、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-ftlb (13.6, 27.1, 40.7, and 54.2-Nm)torque.8.1.6 Alternatively, record torque at agreed-upon levels ofbolt tension.NOTE 2When other
18、fastener sizes are used, appropriate torque andload levels are specified.9. Report9.1 Report the following information:9.1.1 Complete identification of the adhesive tested, includ-ing type, source, date manufactured, manufacturers codenumbers, and form.9.1.2 Description of the apparatus used to meas
19、ure tensionand torque.9.1.3 Number of specimens tested.9.1.4 Maximum, minimum, and average tension values ateach applied torque, or maximum, minimum, and averagetorque values at each level of bolt tension.10. Precision and Bias10.1 Precision and bias for this test method are beingdetermined and will
20、 be available by April 2005.11. Keywords11.1 adhesive; lubricity; threadlocking; torque tensionASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determina
21、tion of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or with
22、drawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that you
23、r comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D5648012
