It applies to: It is not utilized if one of the following nomenclature systems can designate the item: The complete nomenclature consists of an Approved Item Name (AIN), an extended modifier (if applicable), and the type designation.
The AIN is presented in all capital letters, is not abbreviated, and is followed by a colon.
Each AIN has a corresponding 6-digit Item Name Code (INC) which can be referenced in the H6 Cataloging Handbook.
The Approved Item Name is "PROJECTILE, 105 MILLIMETER"; the extended modifier(s) "HE, rocket assisted", and the type designation is "M547A3".
[4][5] The type designation is rendered as a prefix letter(s) followed by a number, possibly followed by a letter-number suffix to denote various versions.