Standard Test Method for Fluid Tightness Ability of Adhesives Used on Threaded Fasteners

SIGNIFICANCE AND USE
Thread-locking adhesives are often used on threaded fasteners in sealing applications. This test method is used to determine an adhesive’ability to provide sealing capabilities under specified conditions.
SCOPE
1.1 This test method covers the determination of the ability of adhesives used for locking and sealing threaded fasteners, to make leak-tight assemblies.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Sep-2007
Technical Committee
Current Stage
Ref Project

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ASTM D5657-07 - Standard Test Method for Fluid Tightness Ability of Adhesives Used on Threaded Fasteners
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5657 − 07
StandardTest Method for
Fluid Tightness Ability of Adhesives Used on Threaded
1
Fasteners
This standard is issued under the fixed designation D5657; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Summary of Test Method
1.1 This test method covers the determination of the ability 4.1 This test method consists of subjecting an adhesive-
of adhesives used for locking and sealing threaded fasteners, to cured nut-and-bolt assembly to 50-psi pressure and determin-
make leak-tight assemblies. ing the cured adhesive’s ability to make the assembly leak-
tight.
1.2 The values stated in inch-pound units are to be regarded
as the standard. The SI units given in parentheses are for
5. Significance and Use
information only.
5.1 Thread-locking adhesives are often used on threaded
1.3 This standard does not purport to address all of the
fasteners in sealing applications. This test method is used to
safety concerns, if any, associated with its use. It is the
determine an adhesive’s ability to provide sealing capabilities
responsibility of the user of this standard to establish appro-
under specified conditions.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Apparatus
2. Referenced Documents
6.1 Test Fixture, as shown in Fig. 1, consisting of the
2
following:
2.1 ASTM Standards:
6.1.1 Pressure Vessel, provided with a means of filling with
D907 Terminology of Adhesives
soapy water, capable of applying, withstanding, and measuring
2.2 SAE Standard:
50-psi (345-kPa) pressure of soapy water, and equipped with
SAE J429 Mechanical and Material Requirements for Exter-
3
an air inlet and a gage for supplying and reading the pressure.
nally Threaded Fasteners
1
6.1.2 Metal Plate, flat, smooth approximately ⁄2 in. (12.7
2.3 Federal Specification:
3
mm) thick, drilled with a ⁄8-in. (9.5-mm) hole at its center.The
FF-N-836 Nut: Square, Hexagon, Cap, Slotted, Castle,
5 1
hole is counterbored ⁄8-in. (15.9-mm) diameter by ⁄16 in. (1.6
4
Knurled, Welding and Single Ball Seat
mm) deep. The metal plate is welded to the pressure vessel.
5
6.1.3 Rubber O-Ring or Flat Rubber Gasket, ⁄8-in. (15.9-
3. Terminology
7
mm) outside diameter by ⁄16-in. (11.1-mm) inside diameter by
3.1 Definitions: 3
⁄32 in. (2.4 mm) thick.
3.1.1 Many of the terms in this test method are defined in
6.1.4 Metal Plate, used as a means of pressing the nut of the
Terminology D907.
adhesive-treated test specimen against the O-ring or gasket
with sufficient force to prevent leakage between the top plate
and the washer face of the test specimen nut.
1
This test method is under the jurisdiction of ASTM Committee D14 on
6.1.5 Studs and Nuts, used to clamp the fixture.
Adhesives and is the direct responsibility of Subcommittee D14.80 on Metal
Bonding Adhesives.
7. Test Specimens
Current edition approved Oct. 1, 2007. Published October 2007. Originally
approved in 1995. Last previous edition approved in 2001 as D5657 - 01. DOI:
3
7.1 Steel Bolts— ⁄8-in. size, Grade 5, in accordance with
10.1520/D5657-07.
2
SAE J429, having a minimum length of 1 in. (25.4 mm) with
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
a hexagonal head. Use thread series Unified National Fine, 24
Standards volume information, refer to the standard’s Document Summary page on
3
threads per inch ( ⁄8 by 24 UNF), or Unified National Coarse,
the ASTM website.
3
3 16 threads per inch ( ⁄8 by 16 UNC) as agreed upon between
Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Dr., Warrendale, PA 15096-0001, http://www.sae.org. the user and the manufacturer of the adhesive.
4
AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
21
7.2 Steel Nuts—TypeII,Style4,nominally ⁄64in.(8.3mm)
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov. thick, conforming to Federal Specification FF-N-836.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D5657 − 07
8.2.2 Cure the adhesive in accordance with the manufactur-
er’s instructions, with the test specimens standing vertically on
the bolt heads.
8.2.3 Cure the resulting assemblies for 24 to 26 h at 70 to
77°F (21 to 25°C) and 45 to 55 % relative humidity.
8.2.4 After curing, position the fixture with the top plate up
and fill the pressure vessel with room-temperature water to
whichsufficient
...

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