ASTM F1179-88(2002)
(Practice)Standard Practice for Inspection Procedure for Use of Anaerobic Thread Locking Compounds with Studs
Standard Practice for Inspection Procedure for Use of Anaerobic Thread Locking Compounds with Studs
SCOPE
1.1 This practice covers an inspection procedure to ensure that studs installed with an anaerobic thread locking compound have achieved the necessary backout resistance.
1.2 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.
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Standards Content (Sample)
An American National Standard
Designation: F 1179 – 88 (Reapproved 2002)
Standard Practice for
Inspection Procedure for Use of Anaerobic Thread Locking
Compounds with Studs
This standard is issued under the fixed designation F 1179; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope assembly if a slight initial turning motion (up to ⁄4 turn) of the
studs is observed, and no further turning motion of the studs is
1.1 This practice covers an inspection procedure to ensure
observed, during nut installation or removal. A small initial
that studs installed with an anaerobic thread locking compound
turning of the set stud represents a breaking or powdering of
have achieved the necessary backout resistance.
the locking compound which actually increases resistance to
1.2 This standard does not purport to address all of the
any further turning motion.
safety concerns, if any, associated with its use. It is the
3.1.2.1 Do not restrain studs from turning during the test by
responsibility of the user of this standard to establish appro-
any method other than the locking compound in the set end of
priate safety and health practices and determine the applica-
the stud.
bility of regulatory limitations prior to use.
3.1.3 Reject each stud assembly if the requirements for
2. General Requirements acceptance of 3.1.2 are not met. If one assembly is rejected, all
studs in that bolt circle shall be similarly checked (see 3.1.1
2.1 Application of anaerobic compounds, used as a method
and 3.1.2). Remove and clean all rejected studs in accordance
for locking threaded fasteners, shall be in accordance with the
with the manufacturer’s recommended procedures, reinstall,
anaerobic compound manufacturer’s recommendations.
and reinspect.
2.2 Responsibility for Inspection—Unless otherwise speci-
3.1.3.1 Reinspection shall consist of selecting two of the
fied in the contract, the contractor is responsible for the
reinstalled studs, if four or more studs require reinstallation, or
performance of all inspection requirements as specified herein.
one stud if less than four studs require reinstallation, and
2.3 Government Inspection System—For U.S. Navy pro-
performing procedures 3.1.1, 3.1.2, and 3.1.3.
curements, each organization shall maintain an inspection
3.1.4 If assembly is accepted after step 3.1.2, each stud in
system to ensure that all of the requirements of this practice are
the bolt circle shall be permanently marked (scribe or electro-
being met wherever anaerobic compounds are used for locking
etched) on the exposed end with a line oriented radially in
threaded fasteners.
relation to the center of the bolt circle.
3. Stud Installation Verification
4. Joint Assembly Inspection
3.1 Verification of fastener locking effectiveness of anaero-
4.1 Joint assembly shall be completed and final torque
bic compounds, after the manufacturer’s recommended setting
applied:
period, shall be in accordance with the following:
4.1.1 Note
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