Nuts and anchor nuts are extensively used fasteners in a wide range of applications in defence, aerospace, automotive, construction, and many other industries.They come in countless combinations of types, sizes, thread types, materials finishes & protective coatings and conforming standards.

U.S.  Military / Aerospace Standard Anchor Nuts 

A non-exhaustive list of nut plates conforming to common U.S Military & Aerospace Standards is provided below together with information on the different standardization bodies & supersedures.

Army-Navy Standards (AN) Predecessor to Mil-Spec (MS),
AN fasteners are the industry standard for aircraft, indicating that these fasteners are made to military specifications to stand up to the toughest jobs without faltering.