Nas523 Pdf Info

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.

Defines the types of cutting fluids (neat oils, soluble oils, and semi-synthetic fluids) that fall under the specification. It explicitly excludes straight grinding fluids and electrical discharge machining (EDM) fluids. nas523 pdf