Technical measurements and installation guidelines, including rivet body diameters and shop head heights, can be found at Scribd (Solid Rivet) .
, typically in 1/16-inch increments (e.g., a "-6" represents a 3/8-inch rivet). Practical Application and Safety nas523 pdf
: Technicians also verify these by head markings, such as a single dimple for "AD" rivets or two raised dashes for "DD" (2024 alloy) rivets. 3. Installation Requirements (SW Quadrant) NAS523 has been superseded – primarily by AMS2471
The is a cornerstone of aerospace manufacturing and maintenance. It provides a standardized symbolic system—often referred to as the NAS523 Rivet Code —used on engineering drawings to specify exactly which permanent fasteners are required for a particular location. Technical measurements and installation guidelines
NAS523 has been superseded – primarily by AMS2471 (Alkaline Chemical Conversion Coatings for Aluminum) and process control requirements within AS9100 / NADCAP checklists. However, older contracts and repair stations still reference NAS523.
The standard mandates specific physical tests: