NCB meaning in Governmental ?

The National Codification Bureaus or NATO Codification Bureaux (NCB) are a NATO organization that oversees the management of the NATO Codification System (NCS). It is governed by NATO Allied Committee 135 (AC/135), with each member nation's National Codification Bureau controlling and issuing its own unique NATO Stock Numbers. NATO or European Union membership is not required to do so. Non-NATO (or "Partner") countries can be allowed to join if recommended, vetted, and approved by AC/135.

Countries that participate in the NATO Codification System (NCS) follow common standards and techniques to assign NATO Stock Numbers (NSNs) to items of supply in their defense inventory. The National Codification Bureau (NCB) within each country centrally assigns their national NSNs. The assignment of an NSN denotes a distinctive item of supply; to eliminate confusion, the number will never be re-used.