1、Designation: D5657 07 (Reapproved 2014)Standard Test Method forFluid Tightness Ability of Adhesives Used on ThreadedFasteners1This standard is issued under the fixed designation D5657; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the abilityof adhesives used for locking and sealing thread
3、ed fasteners, tomake leak-tight assemblies.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is therespons
4、ibility 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 SAE Standard:SAE J429 Mechanical and Material Requirements fo
5、r Exter-nally Threaded Fasteners32.3 Federal Specification:FF-N-836 Nut: Square, Hexagon, Cap, Slotted, Castle,Knurled, Welding and Single Ball Seat43. Terminology3.1 Definitions:3.1.1 Many of the terms in this test method are defined inTerminology D907.4. Summary of Test Method4.1 This test method
6、consists of subjecting an adhesive-cured nut-and-bolt assembly to 50-psi pressure and determin-ing the cured adhesives ability to make the assembly leak-tight.5. Significance and Use5.1 Thread-locking adhesives are often used on threadedfasteners in sealing applications. This test method is used tod
7、etermine an adhesives ability to provide sealing capabilitiesunder specified conditions.6. Apparatus6.1 Test Fixture, as shown in Fig. 1, consisting of thefollowing:6.1.1 Pressure Vessel, provided with a means of filling withsoapy water, capable of applying, withstanding, and measuring50-psi (345-kP
8、a) pressure of soapy water, and equipped withan air inlet and a gage for supplying and reading the pressure.6.1.2 Metal Plate, flat, smooth approximately12 in. (12.7mm) thick, drilled with a38-in. (9.5-mm) hole at its center. Thehole is counterbored58-in. (15.9-mm) diameter by116 in. (1.6mm) deep. T
9、he metal plate is welded to the pressure vessel.6.1.3 Rubber O-Ring or Flat Rubber Gasket,58-in. (15.9-mm) outside diameter by716-in. (11.1-mm) inside diameter by332 in. (2.4 mm) thick.6.1.4 Metal Plate, used as a means of pressing the nut of theadhesive-treated test specimen against the O-ring or g
10、asketwith sufficient force to prevent leakage between the top plateand the washer face of the test specimen nut.6.1.5 Studs and Nuts, used to clamp the fixture.7. Test Specimens7.1 Steel Bolts38-in. size, Grade 5, in accordance withSAE J429, having a minimum length of 1 in. (25.4 mm) witha hexagonal
11、 head. Use thread series Unified National Fine, 24threads per inch (38 by 24 UNF), or Unified National Coarse,16 threads per inch (38 by 16 UNC) as agreed upon betweenthe user and the manufacturer of the adhesive.7.2 Steel NutsType II, Style 4, nominally2164 in. (8.3 mm)thick, conforming to Federal
12、Specification FF-N-836.1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.80 on MetalBonding Adhesives.Current edition approved March 1, 2014. Published March 2014. Originallyapproved in 1995. Last previous edition appro
13、ved in 2007 as D5657 07. DOI:10.1520/D5657-07R14.2For 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 f
14、rom 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
15、, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States18. Procedure8.1 Degrease all nut-and-bolt test specimens, keep themclean, and store at 70 to 77F (21 to 25C) at a relativehumidity of less than 20 %.8.2 Determine fluid tightness on not less than five speci-mens as
16、 follows:8.2.1 Apply test adhesive to the threads of the test bolt andnut E. Place the test bolt through the center hole in plate D andscrew the test nut onto the bolt by hand, allowing three threadsto protrude.8.2.2 Cure the adhesive in accordance with the manufactur-ers instructions, with the test
17、 specimens standing vertically onthe bolt heads.8.2.3 Cure the resulting assemblies for 24 to 26 h at 70 to77F (21 to 25C) and 45 to 55 % relative humidity.8.2.4 After curing, position the fixture with the top plate upand fill the pressure vessel with room-temperature water towhich sufficient soap o
18、r synthetic wetting agent has been addedto reduce its surface tension.8.2.5 Set the O-ring or gasket and the test specimen in placeand swivel the bottom plate over the specimen and thetightening studs.8.2.6 Clamp the test specimen in position by tightening thenuts of the studs against the bottom pla
19、te, forcing the nut of thetest specimen against the O-ring or gasket.8.2.7 Reposition the apparatus so that the fluid level isabove the test specimen.8.2.8 Apply 50 6 5-psi pressure to the water and determineif leakage occurs between the threads of the test nut and boltwithin 1 min of applying the p
20、ressure.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 Number of specimens tested, and9.1.3 Number of specimens that leaked.10. Precision and Bias10.1 Precision
21、and bias for this test method are beingdetermined and will be available by April 2005.11. Keywords11.1 adhesive; fluid tightness; sealing; threadlockingASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Us
22、ers of this standard are expressly advised that determination 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 ever
23、y five years andif not revised, either reapproved or withdrawn. 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 techni
24、cal committee, which you may attend. If you feel that your 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 Conshohocke
25、n, 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).FIG. 1 Fluid-Tightness Test JigD5657 07 (2014)2
