in 1/16" increments (e.g., a "-6" represents a 3/8" length). Key Specifications and Guidelines Permanent Deformation:
Unlike a simple part number, the NAS523 code system breaks down the physical properties of the fastener, ensuring that a repair team in the field knows exactly what type of rivet they are installing or replacing. Importance of NAS523 in Aerospace
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The standard covers permanent fasteners—primarily solid rivets—where installation causes permanent deformation, necessitating the destruction of the fastener for removal. The NAS523 Symbol Explained
For further technical details, you can view the NAS523 Rivet Identification Guide on Scribd . in 1/16" increments (e
: A designation of "-6" translates to a rivet length of 6/16" (3/8"). For countersunk rivets, this includes the head; for universal heads, it measures the shank only. 4. Southwest (SW) Quadrant: Hole Preparation
The Aerospace Industries Association (AIA) manages and sells official NAS standards through authorized distributors like IHS Markit, SAE International, or Techstreet. The room hardened
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: Provides specific installation instructions, such as dimpling or countersinking requirements.
As technology continues to evolve, the NAS523 PDF specification is likely to undergo updates and revisions. Future developments may include:
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