Aircraft General Standards (AGS) were issued by the Directorate of Technical Development of the Air Ministry from the 1920’s and persist till today through substitutions to British Standards and AGS revisions. They relate to fasteners  such as bolts, nuts, rivets, fork joints, taper pins, common to all types of aircraft. AGS fasteners are made in a range of sizes and different materials.

Different have been developed and are currently employed in the procurement of fasteners by the Armed Forces, national and international agencies and industrial companies around the world in their attempt for uniform quality by establishing baselines for fastener characteristics, manufacturing processes, terminology, and expectations.These Standards cover a variety of required information on fasteners like their physical characteristics, like their inch or metric dimensions/tolerances, their material composition and chemical properties, property test methods, procedural instructions for fas

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.

Anchor nuts, aka nut plates, nut plates or anchor plates, are terms used interchangeably and relate to stamped sheet metal fasteners with an internally threaded tube and a plate with two clearance holes for rivets. Initially designed and still extensively used in aerospace applications, they are today also used in automotive, motorsports, and many other industries in blind mounted panel applications where hex nuts cannot be used or an attached nut is required for ease of maintenance.

Below is a non-exhaustive compilation of anchor nuts conforming to the DIN LN Aerospace Standards. Standards marked with (*) are inactive for new designs.

DIN LN Aerospace Standard Anchor Nuts

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.