Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose. This document describes tests measuring properties of single component, self-curing liquid anaerobic compounds used for locking, retaining, or sealing of machined flange surfaces, and threaded or cylindrical assemblies. Anaerobics used for sealing casting porosity are not covered by this standard. 

Foreword. 

This document identifies which tests (Appendix A, Table A1) are assigned to each functional application (e.g., locking, sealing, retaining, etc.) 

Test Selection. This document provides test selection content criteria for creating and revising anaerobic specifications. Use Appendix A, Table A1 to select the appropriate tests for the chosen anaerobic use. 

In Appendix A, Table A1, tests marked "M" are mandatory and must be part of the regional standard. 

This document is referenced in specific regional standards (e.g., North America 998s) to maintain a focal point for test content, procedures, and eliminates the need to reproduce them in each document. 

Media. Approving global anaerobic formulations presents test selection challenges for determining media compatibility. Since initial approvals may be by region, media testing may only represent regional and application-specific choices. Regional document authors should consider using standard test media with controlled, single source formulations (e.g., ASTM D471, standard test liquids) that are moderately more aggressive to anaerobics than current production fluids. Further, consideration should be given to testing all potential media use as part of the initial approval. Authors are encouraged to contact the Global Powertrain Integration and Sealant Specialist Team, release responsible engineer, manufacturing liaison engineer, and the anaerobic supplier to coordinate and identify all appropriate media. 

Applicability.

Classification, Paragraphs 4.2 Through 4.18. Relate to product selection, consistency and short-term compatibility in application use and storage. Also they permit comparison of production compounds. 

Performance Tests, Paragraph 4.19. Evaluates the retaining and sealing required in locking, retaining or sealing of machined flange surfaces, threaded or cylindrical assemblies in contact with the adequate fluids. They permit comparison and measure the performance level of production compounds. 

Finish Influence. General tests for breakaway and prevailing torque, static shear strength (pin and collar), and fluid compatibility use test parts with plain finishes to minimize their effect on anaerobic test results. These standard tests achieve repeatable and reproducible results to compare liquid anaerobic compounds. The tester and end user may test production released finishes to measure their influence on general or performance test results in the specified documents.

Base Metal Influence. Tests for anaerobic strength and cure are affected by the surface chemistry of base metals. The tester and end user should test no finish or uncoated production released surfaces to measure their influence on general or performance test results in the specified documents. 

Applicable Anaerobic Compounds. Global materials referencing this document are listed in Table 5. Table 5 content consists of regionally designated older active standards where the category test protocol may not be clear (Appendix A, Table A1). New releases following publication will identify the proper test category referencing this document.

Managing Change. Until the older regional standard content is revised or refreshed, any changes in approved products or suppliers to that standard will follow the mandatory tests in the appropriate Appendix A, Table A1 category of this standard and not the test content of the unrevised regional standard. 

Related Documents. This document does not cover pre-applied thread sealants. Those applications are covered in the following; 9985473, 9985490, GM6124M (limited use – no replacement), GM6175M/GM6194M (limited use – no replacement), and GMW14657 managed by the GM Fasteners Committee.