National Item Identification Number
National Stock Number
Federal Supply Class
Referenced on: http://www.tpub.com/content/misc_manuals_1/TM-11-6665-245-12/TM-11-6665-245-120033.htm
A fixed number of components and/or items, not all having the same basic name, which are required for determination, by comparison, of the radioactivity detecting and measuring accuracy of radiac equipment, such as RADIAC SET. May or may not include comparison of computing accuracy.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)