J2270_201606 Ship Systems and Equipment - Threaded Fasteners - Inspection, Test, and Installation Guidance

This document has not been revised since 1996 and due to extensive changes this document has been rewritten and retitled appropriately as a guidance document. This revision restructures the sequencing of the information to provide better readability and flow. Definitions were modified to be in accordance with Navy standards. References have been updated and new references added. The test section was expanded to add more information on hardness testing, non-destructive testing and sampling. The test section now includes wedge testing, coating thickness, hydrogen embrittlement testing, impact testing, elongation testing, reduction of area testing, decarburization and receipt inspection. The self-locking fastener sample plan has been updated to be in accordance with Navy standards. The installation section has been expanded to include additional information on lubrication, methods for obtaining preload, tightening sequence and procedures such as the use of crow’s foot and feel method, and the use of anaerobic compounds such as primers, cure speeds, K values and selection guidance.