Abstract

SAE Industry Technologies Consortia, through Aerospace Standard AS20620™ - AS20639™, specifies the design and performance requirements for Nut, Self-Locking, Extended Washer Double Hexagon. The standard, issued in 1969 and revised in 2004, ensures the use of corrosion-resistant steel materials with specific finishes and dimensions. Compliance with ISO standards for screw threads and crack tests is mandatory. The document emphasizes the importance of using qualified manufacturers and following designated drawing practices. Us...