The NAS523 rivet code is a specification standard used in the aerospace industry for rivets. The code provides detailed requirements for the design, materials, and manufacturing of rivets used in aircraft and spacecraft.

Provides dimpling or countersinking instructions, showing exactly what type of prep work is required for the installation.

This lower-right quadrant typically specifies the length of the rivet in 1/16th-inch increments. Common Documents and PDF Guides

Disclaimer: This blog post is for educational purposes. Always consult the official NAS523 standard document and your specific Aircraft Maintenance Manual (AMM) or Structural Repair Manual (SRM) for certified data.

hosts various versions of the NAS523 Rivet Identification Guide , which includes alloy markings and head style diagrams .