Specifies packaging, labeling, and storage requirements. Drums must be marked with the NAS523 lot number and date of manufacture.
Decoding the Skies: A Guide to the NAS523 Rivet Identification Code nas523 pdf
NAS523 refers to a National Aerospace Standard (NAS) specification. Specifically, NAS523 is a standard that outlines the dimensions and tolerances for countersunk holes, as well as the protrusion values for fastener heads. Specifies packaging, labeling, and storage requirements