Pdf - Nas523

Understanding the "crosshair" is critical for any aviation maintenance engineer (AME) or technician working with sheet metal. ↖️ Northwest (NW): Identity & Material

Often identifies an MS20470AD rivet (2117 aluminum alloy). nas523 pdf

This quadrant specifies the fastener's basic part number (often or MS standards) and the material it is made from. Understanding the "crosshair" is critical for any aviation

Required hole preparation (e.g., dimpling or countersinking). SE (Southeast): Fastener length. Breakdown of the NAS523 Symbol Quadrants typically in increments of .

The NAS523 code is a standardized practice that includes all types of fasteners that undergo permanent deformation during installation. Removing these fasteners typically requires their destruction, making precise initial installation essential for structural integrity.

This quadrant indicates the shank diameter, typically in increments of .