ASTM D5649-15(2023) - 1.5.2023
 
Significance and Use

5.1?This test method provides reasonably accurate information with regard to the determination of the securing or locking effect of adhesives used in threaded fasteners. This test method may also be used to determine the degree of cure and the effect of environment on torque strength.

5.2?The accuracy of the test results depends to a large degree on the thread clearance of the test fasteners and the inclusion of air bubbles in the bond line. Data generated by this test method should be safety-factored accordingly if used as quality assurance acceptance or rejection.

 
1. Scope

1.1?This test method is used to make comparative assessments of the securing or locking effect of adhesives used in threaded assemblies.

1.2?The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

1.3?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

E177-26a

Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods (Includes all amendments and changes 5/14/2026).

D2651-01(2024)

Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding

D907-15(2023)

Standard Terminology of Adhesives

E691-23

Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method